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Table Of Contents

RXQ5-54PY1

R-410A Cooling Only 50Hz

Si34 - 704

Summary of content (394 pages)

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Si34 - 704 RXQ5-54PY1 R-410A Cooling Only 50Hz
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Si34-704 R-410A Cooling Only 50Hz 1. Introduction ............................................................................................ vi 1.1 Safety Cautions ....................................................................................... vi 1.2 PREFACE ................................................................................................x Part 1 General Information ........................................................... 1 1. Model Names of Indoor/Outdoor Units................
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Si34-704 3. Special Control......................................................................................99 3.1 3.2 3.3 3.4 3.5 Startup Control .......................................................................................99 Oil Return Operation ............................................................................100 Pump-down Residual Operation ..........................................................101 Standby ....................................................................
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Si34-704 3. Troubleshooting by Indication on the Remote Controller ....................198 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.23 3.24 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.36 3.37 3.38 3.39 3.40 Table of Contents “A0” Indoor Unit: Error of External Protection Device ...........................198 “A1” Indoor Unit: PC Board Defect.........................................................
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Si34-704 3.41 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board......................................................263 3.42 “UO” Outdoor Unit: Gas Shortage Alert .................................................264 3.43 “U1” Reverse Phase, Open Phase.........................................................266 3.44 “U2” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure......................................................................
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Si34-704 5. Piping Installation Point.......................................................................356 5.1 Piping Installation Point ........................................................................356 5.2 The Example of a Wrong Pattern .........................................................357 6. 7. 8. 9. Example of connection (R-410A Type) ...............................................359 Thermistor Resistance / Temperature Characteristics........................361 Pressure Sensor .
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Introduction Si34-704 1. Introduction 1.1 Safety Cautions Cautions and Warnings Be sure to read the following safety cautions before conducting repair work. Warning” and “ Caution”. The “ The caution items are classified into “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “ Caution” items can also lead to serious accidents under some conditions if they are not followed.
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Si34-704 Introduction Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks. Be sure to turn off the power switch and unplug the power cable when cleaning the equipment.
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Introduction Si34-704 Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire. When connecting the cable between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable.
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Si34-704 Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fall, resulting in injury. Check the grounding, and repair it if the equipment is not properly grounded.
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Introduction 1.2 Si34-704 PREFACE Thank you for your continued patronage of Daikin products. This is the new service manual for Daikin's Year 2007 VRVIII series Cooling Only System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs. This service manual contains information regarding the servicing of VRVIII series R-410A Cooling Only System.
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Si34-704 Part 1 General Information 1. Model Names of Indoor/Outdoor Units....................................................2 2. External Appearance...............................................................................3 2.1 Indoor Units ..............................................................................................3 2.2 Outdoor Units ...........................................................................................4 3. Combination of Outdoor Units........................
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Model Names of Indoor/Outdoor Units Si34-704 1.
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Si34-704 External Appearance 2. External Appearance 2.
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External Appearance 2.
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Si34-704 External Appearance High COP Series (Energy Saving Series) RXQ16PH, 18PH RXQ24PH, 26PH 16, 18HP 24, 26HP RXQ28PH, 30PH RXQ32PH, 34PH 28, 30HP 32, 34HP RXQ36PH, 38PH, 40PH, 42PH, 44PH, 46PH, 48PH, 50PH 36, 38, 40, 42, 44, 46, 48, 50HP General Information 5
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Combination of Outdoor Units Si34-704 3.
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Si34-704 Combination of Outdoor Units High COP Series (Energy Saving Series) System Number Capacity of units 16HP 18HP 24HP 26HP 28HP 30HP 32HP 34HP 36HP 38HP 40HP 42HP 44HP 46HP 48HP 50HP 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Note: General Information 8 ●● ● ●●● ●● ●● ● ● 10 Module 12 14 16 18 Outdoor Unit Multi Connection Piping Kit (Option) BHFP22P100 ● ● ● ● ● ● ●● ●● ●●● ●● ●● ●● ● ● BHFP22P151 ● ● ● ●● ● ●●● ●● ● ● For multiple connection of 16HP system or more, an optional Daikin Outdoor
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Model Selection Si34-704 4.
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Si34-704 Model Selection Capacity Range of Outdoor Units Normal Series (Space Saving Series) Outdoor unit Capacity index HP 5 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 Single outdoor units Double outdoor units Triple outdoor units 125 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 (1) Combination ratio of index (%) Max. Types of connected indoor units Min.
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Model Selection Si34-704 Connectable Indoor Unit Capacity Range Capacity Index 0.8HP 20 1HP 25 1.25HP 31.25 1.6HP 40 2HP 50 2.5HP 62.5 3.
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Si34-704 Model Selection Differences from Conventional Models Item Compressor Workability Object Conventional model (MA Model) Connection of equalizer oil pipe z NONE (No particular changes in terms of service) z YES Equalizer oil pipe for multioutdoor-unit system z NONE z YES Procedure for calculating refrigerant refilling quantity z Refilling quantity due to piping z Refilling quantity due to piping length + Adjustment quantity length - Adjustment quantity according to models of according to
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Model Selection 12 Si34-704 General Information
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Si34-704 Part 2 Specifications 1. Specifications ........................................................................................14 1.1 Outdoor Units .........................................................................................14 1.2 Indoor Units ............................................................................................
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Specifications Si34-704 1. Specifications 1.1 Outdoor Units Cooling Only 50Hz-Normal Series (Space Saving Series) Model Name ★1 Cooling Capacity (19.5°CWB) kcal / h RXQ5PY1 12,100 RXQ8PY1 19,400 Btu / h 48,100 76,800 kW 14.1 22.5 kW 14.0 22.4 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) 1680×635×765 1680×930×765 ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) mm Heat Exchanger Type Comp.
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Si34-704 Specifications Model Name RXQ10PY1 ★1 Cooling Capacity (19.5°CWB) 24,300 29,000 Btu / h 96,200 115,000 kW 28.2 33.7 kW 28.0 33.5 mm Ivory White (5Y7.5/1) 1680×930×765 Ivory White (5Y7.5/1) 1680×1240×765 Cross Fin Coil Hermetically Sealed Scroll Type Cross Fin Coil Hermetically Sealed Scroll Type 13.72+10.53 ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) Heat Exchanger Type Comp. Piston Displacement m³/h 13.72+10.53 Number of Revolutions r.p.
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Specifications Si34-704 Model Name RXQ14PY1 ★1 Cooling Capacity (19.5°CWB) 34,600 39,000 Btu / h 137,000 155,000 kW 40.2 45.3 kW 40.0 45.0 mm Ivory White (5Y7.5/1) 1680×1240×765 Ivory White (5Y7.5/1) 1680×1240×765 Cross Fin Coil Hermetically Sealed Scroll Type Cross Fin Coil Hermetically Sealed Scroll Type 13.72+10.53+10.53 ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) Heat Exchanger Type Comp. Piston Displacement m³/h 13.72+10.53+10.53 Number of Revolutions r.p.
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Si34-704 Specifications Model Name (Combination Unit) RXQ18PY1 RXQ20PY1 Model Name (Independent Unit) — ★1 Cooling Capacity (19.5°CWB) kcal / h 42,400 RXQ8PY1+RXQ12PY1 48,300 Btu / h 168,000 192,000 kW 49.3 56.2 kW 49.0 55.9 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) 1680×1240×765 Cross Fin Coil (1680×930×765)+(1680×1240×765) Cross Fin Coil ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) Heat Exchanger Comp.
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Specifications Si34-704 Model Name (Combination Unit) RXQ22PY1 RXQ24PY1 Model Name (Independent Unit) kcal / h RXQ10PY1+RXQ12PY1 53,200 RXQ8PY1+RXQ16PY1 58,300 Btu / h 211,000 231,000 kW 61.9 67.8 kW 61.5 67.4 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×1240×765) Cross Fin Coil (1680×930×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) Heat Exchanger Comp.
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Si34-704 Specifications Model Name (Combination Unit) RXQ26PY1 RXQ28PY1 Model Name (Independent Unit) kcal / h RXQ8PY1+RXQ18PY1 61,700 RXQ10PY1+RXQ18PY1 66,700 Btu / h 250,000 264,000 kW 71.8 77.5 kW 71.4 77.0 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×1240×765) Cross Fin Coil (1680×930×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) Heat Exchanger Comp.
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Specifications Si34-704 Model Name (Combination Unit) RXQ30PY1 RXQ32PY1 Model Name (Independent Unit) kcal / h RXQ12PY1+RXQ18PY1 71,400 RXQ16PY1+RXQ16PY1 77,800 Btu / h 283,000 309,000 kW 83.0 90.5 kW 82.5 90.0 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×1240×765)+(1680×1240×765) Cross Fin Coil (1680×1240×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) Heat Exchanger Comp.
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Si34-704 Specifications Model Name (Combination Unit) RXQ34PY1 RXQ36PY1 Model Name (Independent Unit) kcal / h RXQ16PY1+RXQ18PY1 81,400 RXQ18PY1+RXQ18PY1 85,100 Btu / h 323,000 338,000 kW 94.6 99.0 kW 94.0 98.0 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×1240×765)+(1680×1240×765) Cross Fin Coil (1680×1240×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) Heat Exchanger Comp.
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Specifications Si34-704 Model Name (Combination Unit) RXQ38PY1 RXQ40PY1 Model Name (Independent Unit) kcal / h RXQ8PY1+RXQ12PY1+RXQ18PY1 91,200 RXQ8PY1+RXQ16PY1+RXQ16PY1 97,200 Btu / h 362,000 386,000 kW 106 113 kW 105 112 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil (1680×930×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.
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Si34-704 Specifications Model Name (Combination Unit) RXQ42PY1 RXQ44PY1 Model Name (Independent Unit) kcal / h RXQ8PY1+RXQ16PY1+RXQ18PY1 101,000 RXQ8PY1+RXQ18PY1+RXQ18PY1 104,000 Btu / h 399,000 413,000 kW 117 121 kW 116 120 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil (1680×930×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.
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Specifications Si34-704 Model Name (Combination Unit) RXQ46PY1 RXQ48PY1 Model Name (Independent Unit) kcal / h RXQ10PY1+RXQ18PY1+RXQ18PY1 109,000 RXQ12PY1+RXQ18PY1+RXQ18PY1 114,000 Btu / h 433,000 454,000 kW 127 133 kW 126 132 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil (1680×1240×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.
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Si34-704 Specifications Model Name (Combination Unit) RXQ50PY1 RXQ52PY1 Model Name (Independent Unit) kcal / h RXQ14PY1+RXQ18PY1+RXQ18PY1 120,000 RXQ16PY1+RXQ18PY1+RXQ18PY1 124,000 Btu / h 474,000 491,000 kW 139 144 kW 138 143 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×1240×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil (1680×1240×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil m³/h Hermetically Sealed Scroll Type (13.72+10.53+10.53)+(13.72+10.53+10.53)+(13.72+10.53+10.
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Specifications Si34-704 Model Name (Combination Unit) RXQ54PY1 Model Name (Independent Unit) kcal / h RXQ18PY1+RXQ18PY1+RXQ18PY1 127,000 Btu / h 505,000 kW 148 ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) kW Casing Color Dimensions: (H×W×D) Heat Exchanger Comp. mm m³/h Hermetically Sealed Scroll Type (13.72+10.53+10.53)+(13.72+10.53+10.53)+(13.72+10.53+10.53) Number of Revolutions r.p.
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Si34-704 Specifications Cooling Only 50Hz High COP Series (Energy Saving Series) Model Name RXQ16PHY1 RXQ18PHY1 kcal / h RXQ8PY1+RXQ8PY1 38,800 RXQ8PY1+RXQ10PY1 43,600 Btu / h 154,000 173,000 kW 45.1 50.7 kW 44.8 50.4 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×930×765) (1680×930×765)+(1680×930×765) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) Casing Color Dimensions: (H×W×D) mm Heat Exchanger Comp.
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Specifications Si34-704 Model Name (Combination Unit) RXQ24PHY1 RXQ26PHY1 Model Name (Independent Unit) kcal / h RXQ8PY1+RXQ8PY1+RXQ8PY1 58,100 RXQ8PY1+RXQ8PY1+RXQ10PY1 63,000 Btu / h 231,000 250,000 kW 67.6 73.2 kW 67.2 72.8 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×930×765)+(1680×930×765) Cross Fin Coil (1680×930×765)+(1680×930×765)+(1680×930×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.
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Si34-704 Specifications Model Name (Combination Unit) RXQ28PHY1 RXQ30PHY1 Model Name (Independent Unit) kcal / h RXQ8PY1+RXQ8PY1+RXQ12PY1 67,800 RXQ8PY1+RXQ10PY1+RXQ12PY1 72,600 Btu / h 269,000 288,000 kW 78.8 84.4 kW 78.3 83.9 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×930×765)+(1680×930×765)+(1680×1240×765) Cross Fin Coil (1680×930×765)+(1680×930×765)+(1680×1240×765) Cross Fin Coil ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.
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Specifications Si34-704 Model Name (Combination Unit) RXQ32PHY1 RXQ34PHY1 Model Name (Independent Unit) kcal / h RXQ8PY1+RXQ12PY1+RXQ12PY1 77,300 RXQ10PY1+RXQ12PY1+RXQ12PY1 82,200 Btu / h 307,000 326,000 kW 89.9 95.6 kW 89.4 95.0 Ivory White (5Y7.5/1) Ivory White (5Y7.
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Si34-704 Specifications Model Name (Combination Unit) RXQ36PHY1 RXQ38PHY1 Model Name (Independent Unit) kcal / h RXQ12PY1+RXQ12PY1+RXQ12PY1 87,700 RXQ12PY1+RXQ12PY1+RXQ14PY1 92,900 Btu / h 348,000 368,000 kW 102 108 kW 101 107 Ivory White (5Y7.5/1) Ivory White (5Y7.
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Specifications Si34-704 Model Name (Combination Unit) RXQ40PHY1 RXQ42PHY1 Model Name (Independent Unit) kcal / h RXQ12PY1+RXQ12PY1+RXQ16PY1 97,200 RXQ12PY1+RXQ12PY1+RXQ18PY1 101,000 Btu / h 386,000 399,000 kW 113 117 kW 112 116 Ivory White (5Y7.5/1) Ivory White (5Y7.
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Si34-704 Specifications Model Name (Combination Unit) RXQ44PHY1 RXQ46PHY1 Model Name (Independent Unit) kcal / h RXQ12PY1+RXQ16PY1+RXQ16PY1 108,000 RXQ12PY1+RXQ16PY1+RXQ18PY1 111,000 Btu / h 427,000 440,000 kW 125 129 kW 124 128 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) (1680×1240×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil (1680×1240×765)+(1680×1240×765)+(1680×1240×765) Cross Fin Coil Hermetically Sealed Scroll Type Hermetically Sealed Scroll Type ★1 Cooling Capacity (19.
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Specifications Si34-704 Model Name (Combination Unit) RXQ48PHY1 RXQ50PHY1 Model Name (Independent Unit) kcal / h RXQ16PY1+RXQ16PY1+RXQ16PY1 117,000 RXQ16PY1+RXQ16PY1+RXQ18PY1 120,000 Btu / h 464,000 478,000 kW 136 140 kW 135 139 Ivory White (5Y7.5/1) Ivory White (5Y7.
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Si34-704 1.2 Specifications Indoor Units Ceiling Mounted Cassette Type (Double Flow) Model ★1 Cooling Capacity (19.5°CWB) FXCQ20MVE FXCQ25MVE FXCQ32MVE kcal/h 2,000 2,500 3,200 4,000 Btu/h 7,800 9,900 12,600 16,000 kW 2.3 2.9 3.7 4.7 kW 2.2 2.8 3.6 4.5 kcal/h 2,200 2,800 3,400 4,300 Btu/h 8,500 10,900 13,600 17,100 kW 2.5 3.2 4.0 5.0 Galvanized Steel Plate 305×775×600 Galvanized Steel Plate 305×775×600 Galvanized Steel Plate 305×990×600 2×10×1.
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Specifications Si34-704 Ceiling Mounted Cassette Type (Double Flow) Model ★1 Cooling Capacity (19.5°CWB) FXCQ50MVE FXCQ63MVE FXCQ80MVE FXCQ125MVE kcal/h 5,000 6,300 8,000 12,500 Btu/h 19,800 24,900 31,700 49,500 kW 5.8 7.3 9.3 14.5 kW 5.6 7.1 9.0 14.0 kcal/h 5,400 6,900 8,600 13,800 Btu/h 21,500 27,300 34,100 54,600 kW 6.3 8.0 10.0 16.0 Galvanized Steel Plate 305×1,175×600 Galvanized Steel Plate 305×1,665×600 Galvanized Steel Plate 305×1,665×600 2×10×1.
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Si34-704 Specifications Ceiling Mounted Cassette Type (Multi-flow) Model ★1 Cooling Capacity (19.5°CWB) FXFQ25MVE FXFQ32MVE FXFQ40MVE kcal/h 2,500 3,200 4,000 5,000 Btu/h 9,900 12,600 16,000 19,800 kW 2.9 3.7 4.7 5.8 kW 2.8 3.6 4.5 5.6 kcal/h 2,800 3,400 4,300 5,400 Btu/h 10,900 13,600 17,100 21,500 kW 3.2 4.0 5.0 6.3 Galvanized Steel Plate 246×840×840 Galvanized Steel Plate 246×840×840 Galvanized Steel Plate 246×840×840 2×8×1.2 ★2 Cooling Capacity (19.
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Specifications Si34-704 Ceiling Mounted Cassette Type (Multi-flow) Model ★1 Cooling Capacity (19.5°CWB) FXFQ63MVE FXFQ80MVE FXFQ100MVE FXFQ125MVE kcal/h 6,300 8,000 10,000 12,500 Btu/h 24,900 31,700 39,600 49,500 kW 7.3 9.3 11.6 14.5 kW 7.1 9.0 11.2 14.0 kcal/h 6,900 8,600 10,800 13,800 Btu/h 27,300 34,100 42,700 54,600 kW 8.0 10.0 12.5 16.0 Galvanized Steel Plate 246×840×840 Galvanized Steel Plate 288×840×840 Galvanized Steel Plate 288×840×840 2×12×1.
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Si34-704 Specifications Ceiling Mounted Cassette Corner Type Model ★1 Cooling Capacity (19.5°CWB) FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE kcal/h 2,500 3,200 4,000 6,300 Btu/h 9,900 12,600 16,000 24,900 kW 2.9 3.7 4.7 7.3 kW 2.8 3.6 4.5 7.1 kcal/h 2,800 3,400 4,300 6,900 Btu/h 10,900 13,600 17,100 27,300 kW 3.2 4.0 5.0 8.0 Galvanized Steel Plate 215×1,110×710 Galvanized Steel Plate 215×1,110×710 Galvanized Steel Plate 215×1,310×710 3×11×1.75 ★2 Cooling Capacity (19.
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Specifications Si34-704 Slim Ceiling Mounted Duct Type (with Drain Pump) Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Dimensions: (H×W×D) Coil (Cross Fin Coil) FXDQ20NAVE FXDQ25NAVE kcal/h 2,000 2,500 3,200 Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 kW 2.5 3.2 4.
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Si34-704 Specifications Slim Ceiling Mounted Duct Type (with Drain Pump) Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXDQ40NAVE FXDQ50NAVE kcal/h 4,000 5,000 6,300 Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 kW 4.5 5.6 7.1 kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW 5.0 6.3 8.
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Specifications Si34-704 Slim Ceiling Mounted Duct Type (without Drain Pump) Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Dimensions: (H×W×D) Coil (Cross Fin Coil) FXDQ20NVET FXDQ25NVET kcal/h 2,000 2,500 3,200 Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 kW 2.5 3.2 4.
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Si34-704 Specifications Slim Ceiling Mounted Duct Type (without Drain Pump) Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXDQ40NVET FXDQ50NVET kcal/h 4,000 5,000 6,300 Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 kW 4.5 5.6 7.1 kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW 5.0 6.3 8.
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Specifications Si34-704 Slim Ceiling Mounted Duct Type (PVE: with Drain Pump PVET: without Drain Pump) Model FXDQ20PVE FXDQ20PVET FXDQ25PVE FXDQ25PVET FXDQ32PVE FXDQ32PVET kcal/h 2,000 2,500 3,200 ★1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 ★2 Cooling Capacity (19.0°CWB) kW kW 2.3 2.2 2.9 2.8 3.7 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 ★3 Heating Capacity kW 2.5 3.2 4.
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Si34-704 Specifications Ceiling Mounted Built-in Type Model ★1 Cooling Capacity (19.5°CWB) FXSQ20MVE FXSQ25MVE kcal/h 2,000 2,500 3,200 Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 kW 2.5 3.2 4.0 Galvanized Steel Plate 300×550×800 Galvanized Steel Plate 300×550×800 3×14×1.75 ★2 Cooling Capacity (19.
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Specifications Si34-704 Ceiling Mounted Built-in Type Model ★1 Cooling Capacity (19.5°CWB) FXSQ40MVE FXSQ50MVE kcal/h 4,000 5,000 6,300 Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 kW 4.5 5.6 7.1 kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW 5.0 6.3 8.0 Galvanized Steel Plate 300×700×800 Galvanized Steel Plate 300×1,000×800 3×14×1.75 ★2 Cooling Capacity (19.
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Si34-704 Specifications Ceiling Mounted Built-in Type Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Dimensions: (H×W×D) Coil (Cross Fin Coil) FXSQ80MVE FXSQ100MVE FXSQ125MVE kcal/h 8,000 10,000 12,500 Btu/h 31,700 39,600 49,500 kW 9.3 11.6 14.5 kW 9.0 11.2 14.0 kcal/h 8,600 10,800 13,800 Btu/h 34,100 42,700 54,600 kW 10.0 12.5 16.0 Galvanized Steel Plate 300×1,400×800 Galvanized Steel Plate 300×1,400×800 3×14×1.
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Specifications Si34-704 Ceiling Mounted Duct Type Model ★1 Cooling Capacity (19.5°CWB) FXMQ40MAVE FXMQ50MAVE FXMQ63MAVE kcal/h 4,000 5,000 6,300 8,000 Btu/h 16,000 19,800 24,900 31,700 kW 4.7 5.8 7.3 9.3 kW 4.5 5.6 7.1 9.0 kcal/h 4,300 5,400 6,900 8,600 Btu/h 17,100 21,500 27,300 34,100 kW 5.0 6.3 8.0 10.0 Galvanized Steel Plate 390×720×690 Galvanized Steel Plate 390×720×690 Galvanized Steel Plate 390×720×690 3×16×2.0 ★2 Cooling Capacity (19.
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Si34-704 Specifications Ceiling Mounted Duct Type Model ★1 Cooling Capacity (19.5°CWB) FXMQ100MAVE FXMQ125MAVE FXMQ200MAVE FXMQ250MAVE kcal/h 10,000 12,500 19,800 24,800 Btu/h 39,600 49,500 78,500 98,300 kW 11.6 14.5 23.0 28.8 kW 11.2 14.0 22.4 28.0 kcal/h 10,800 13,800 21,500 27,100 Btu/h 42,700 54,600 85,300 107,000 kW 12.5 16.0 25.0 31.5 Galvanized Steel Plate 390×1,110×690 Galvanized Steel Plate 470×1,380×1,100 Galvanized Steel Plate 470×1,380×1,100 3×26×2.
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Specifications Si34-704 Ceiling Suspended Type Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE kcal/h 3,200 6,300 10,000 Btu/h 12,600 24,900 39,600 kW 3.7 7.3 11.6 kW 3.6 7.1 11.2 kcal/h 3,400 6,900 10,800 Btu/h 13,600 27,300 42,700 kW 4.0 8.0 12.5 White (10Y9/0.5) 195×1,160×680 White (10Y9/0.5) 195×1,400×680 3×12×1.75 mm White (10Y9/0.
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Si34-704 Specifications Wall Mounted Type Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXAQ20MAVE FXAQ25MAVE kcal/h 2,000 2,500 3,200 Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 kW 2.5 3.2 4.0 White (3.0Y8.5/10.5) 290×795×230 White (3.0Y8.5/10.5) 290×795×230 2×14×1.4 mm White (3.0Y8.5/10.
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Specifications Si34-704 Wall Mounted Type Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXAQ40MAVE FXAQ50MAVE kcal/h 4,000 5,000 6,300 Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 kW 4.5 5.6 7.1 kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW 5.0 6.3 8.0 White (3.0Y8.5/10.5) 290×1,050×230 White (3.0Y8.5/10.5) 290×1,050×230 2×14×1.4 mm White (3.0Y8.5/10.
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Si34-704 Specifications Floor Standing Type Model ★1 Cooling Capacity (19.5°CWB) FXLQ20MAVE FXLQ25MAVE kcal/h 2,000 2,500 3,200 Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 kW 2.5 3.2 4.0 Ivory White (5Y7.5/1) 600×1,000×222 Ivory White (5Y7.5/1) 600×1,140×222 3×14×1.5 ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) mm Ivory White (5Y7.
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Specifications Si34-704 Floor Standing Type Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXLQ40MAVE FXLQ50MAVE kcal/h 4,000 5,000 6,300 Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 kW 4.5 5.6 7.1 kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW 5.0 6.3 8.0 Ivory White (5Y7.5/1) 600×1,420×222 Ivory White (5Y7.5/1) 600×1,420×222 3×14×1.5 mm Ivory White (5Y7.
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Si34-704 Specifications Concealed Floor Standing Type Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXNQ20MAVE FXNQ25MAVE kcal/h 2,000 2,500 3,200 Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 kW 2.5 3.2 4.0 Galvanized Steel Plate 610×930×220 Galvanized Steel Plate 610×1,070×220 3×14×1.
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Specifications Si34-704 Concealed Floor Standing Type Model ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) FXNQ40MAVE FXNQ50MAVE kcal/h 4,000 5,000 6,300 Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 kW 4.5 5.6 7.1 kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW 5.0 6.3 8.0 Galvanized Steel Plate 610×1,350×220 Galvanized Steel Plate 610×1,350×220 3×14×1.
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Si34-704 Specifications Ceiling Suspended Cassette Type Model Indoor Unit FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Connection Unit BEVQ71MAVE BEVQ100MAVE BEVQ125MAVE kcal/h 7,100 10,000 12,500 Btu/h 28,300 39,600 49,500 kW 8.3 11.6 14.5 kW 8.0 11.2 14.0 kcal/h 7,700 10,800 12,000 Btu/h 30,700 42,700 47,800 kW 9.0 12.5 14.0 White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5) 165×895×895 3×6×1.5 230×895×895 3×8×1.5 230×895×895 3×8×1.5 ★1 Cooling Capacity (19.
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Specifications Si34-704 Outdoor Air Processing Unit Model ★1 Cooling Capacity ★1 Heating Capacity FXMQ125MFV1 FXMQ200MFV1 FXMQ250MFV1 kcal/h 12,000 19,300 24,100 Btu/h 47,800 76,400 95,500 kW 14.0 22.4 28.0 kcal/h 7,700 12,000 15,000 Btu/h 30,400 47,400 59,400 kW 8.9 Galvanized Steel Plate 13.9 Galvanized Steel Plate 17.4 Galvanized Steel Plate mm 470×744×1,100 470×1,380×1,100 470×1,380×1,100 mm 3×26×2.0 3×26×2.0 3×26×2.0 m² 0.28 D13/4G2DA1 0.65 D13/4G2DA1 0.
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Si34-704 Part 3 Refrigerant Circuit 1. Refrigerant Circuit .................................................................................60 1.1 1.2 1.3 1.4 1.5 RXQ5P ...................................................................................................60 RXQ8P ...................................................................................................62 RXQ10P, 12P.........................................................................................64 RXQ14P, 16P, 18P ...........
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Refrigerant Circuit Si34-704 1. Refrigerant Circuit 1.1 RXQ5P No. in refrigerant Symbol system diagram Major Function A M1C Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 188Hz by using the inverter. The number of operating steps is as follows when Inverter compressor is operated. RXQ5P : 18 steps D M1F Inverter fan Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter.
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Si34-704 Refrigerant Circuit RXQ5P T 5 4 K E 6 D M N P J 1 3 A W G 2 O 3D050782 Refrigerant Circuit 61
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Refrigerant Circuit 1.2 Si34-704 RXQ8P No. in refrigerant Symbol system diagram 62 Name Major Function A M1C Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter, while Standard compressor is operated with commercial power supply only. The number of operating steps is as follows when Inverter compressor is operated in combination with Standard compressor.
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Si34-704 Refrigerant Circuit RXQ8P E V F T 5 4 7 D M 6 N 1 G P 3 W A O J 2 3D050783 Refrigerant Circuit 63
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Refrigerant Circuit 1.3 Si34-704 RXQ10P, 12P No. in refrigerant Symbol system diagram Major Function A M1C Inverter compressor (INV) B M2C Standard compressor 1 (STD1) D M1F Inverter fan Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter. E Y1E Electronic expansion valve (Main: EV1) Fully open.
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Si34-704 Refrigerant Circuit RXQ10P, 12P E V F U 5 6 8 D M 7 N 1 G Q P 3 4 A X B W J O 2 3D050784 Refrigerant Circuit 65
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Refrigerant Circuit 1.4 Si34-704 RXQ14P, 16P, 18P No. in refrigerant Symbol system diagram 66 Name Major Function A M1C Inverter compressor (INV) B M2C Standard compressor 1 (STD1) C M3C Standard compressor 1 (STD2) D M1F Inverter fan Since the system is of air heat exchanging type, the fan is operated at 8-step rotation speed by using the inverter. E Y1E Electronic expansion valve (Main: EV1) Fully open.
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Si34-704 Refrigerant Circuit RXQ14P, 16P, 18P 7 E V F 6 9 U D M N 8 G 1 P R Q 3 A 5 4 B X W Y C J O 2 3D050785 Refrigerant Circuit 67
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Refrigerant Circuit 1.5 Si34-704 Outdoor air processing unit FXMQ125MFV1~250MFV1 1.5.1 Refrigerant System Th4 Th3 Th2 C Th1 B A 4D018650B Main Control Equipment Code Symbol Name A Y1E Motorized valve B Y1S Solenoid valve C — Capillary tube Main function Used to control the flow rate of refrigerant, and make the SH control while in cooling or the SC control while in heating.∗ Used to bypass hot gas while in heating with thermostat OFF.
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Si34-704 Functional Parts Layout 2. Functional Parts Layout 2.
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Functional Parts Layout 2.
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Si34-704 2.
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Functional Parts Layout 2.
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Si34-704 2.
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Refrigerant Flow for Each Operation Mode Si34-704 3.
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Si34-704 Refrigerant Flow for Each Operation Mode Cooling Oil Return Operation Indoor unit operation Fan ON Fan OFF Fan ON " OFF " " ON " "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Heat exchanger Heat exchanger Fan Fan Fan Filter EV:Nomal control Filter Electronic expansion valve Indoor unit Thermostat "ON" Refrigerant Circuit " ON " Heat exchanger Filter EV:224pls Filter Electronic expansion valve Indoor unit Filter
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Refrigerant Flow for Each Operation Mode Si34-704 RXQ8P Cooling Operation Indoor unit operation Fan ON Fan ON " ON " "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" " OFF " " ON " Heat exchanger Heat exchanger Fan Fan Fan Filter EV:Nomal control Filter Electronic expansion valve Indoor unit Thermostat "ON" 76 Fan OFF Heat exchanger Filter EV:0pls Filter Electronic expansion valve Indoor unit Filter EV:0pls Filter Electr
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Si34-704 Refrigerant Flow for Each Operation Mode Cooling Oil Return Indoor unit operation Fan OFF Fan ON Fan ON " OFF " " ON " "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Heat exchanger Heat exchanger Fan Fan Fan Filter EV:Nomal control EV:224pls Filter Electronic expansion valve Indoor unit Thermostat "ON" Refrigerant Circuit " ON " Heat exchanger Filter EV:Nomal Filter Electronic expansion valve Indoor unit Filter F
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Refrigerant Flow for Each Operation Mode Si34-704 RXQ10P, 12P Cooling Operation Indoor unit operation Fan ON Fan ON " ON " "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" " OFF " " ON " Heat exchanger Heat exchanger Fan Fan Fan Filter EV:Nomal control Filter Electronic expansion valve Indoor unit Thermostat "ON" 78 Fan OFF Heat exchanger Filter EV:0pls Filter Electronic expansion valve Indoor unit Filter EV:0pls Filter
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Si34-704 Refrigerant Flow for Each Operation Mode Cooling Oil Return Indoor unit operation Fan OFF Fan ON Fan ON " OFF " " ON " "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Heat exchanger Heat exchanger Fan Fan Fan Filter EV:Nomal control EV:224pls Filter Electronic expansion valve Indoor unit Thermostat "ON" Refrigerant Circuit " ON " Heat exchanger Filter EV:Nomal Filter Electronic expansion valve Indoor unit Filter F
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Refrigerant Flow for Each Operation Mode Si34-704 RXQ14P, 16P, 18P Cooling Operation Indoor unit operation Fan ON Fan ON " ON " "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" " OFF " " ON " Heat exchanger Heat exchanger Fan Fan Fan Filter EV:Nomal control Filter Electronic expansion valve Indoor unit Thermostat "ON" 80 Fan OFF Heat exchanger Filter EV:0pls Filter Electronic expansion valve Indoor unit Filter EV:0pls Fil
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Si34-704 Refrigerant Flow for Each Operation Mode Cooling Oil Return Operation Indoor unit operation Fan ON Fan OFF Fan ON " ON " "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" " OFF " Heat exchanger Heat exchanger Fan Fan Fan EV:Nomal control Filter EV:224pls Filter Filter EV:Nomal Filter Electronic expansion valve Electronic expansion valve Indoor unit Indoor unit Thermostat "ON" Refrigerant Circuit " ON " Heat exchange
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Refrigerant Flow for Each Operation Mode 82 Si34-704 Refrigerant Circuit
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Si34-704 Part 4 Function 1. Function general ...................................................................................84 1.1 Symbol ...................................................................................................84 1.2 Operation Mode......................................................................................85 2. Basic Control.........................................................................................86 2.1 2.2 2.3 2.4 2.5 Normal Operation .............
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Function general Si34-704 1. Function general 1.
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Si34-704 1.
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Basic Control Si34-704 2. Basic Control 2.1 Normal Operation 2.1.
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Si34-704 Basic Control Operating Priority and Rotation of Compressors (For multi standard connection system) Each compressor operates in the following order of priority. In the case of multi-outdoor-unit system, each compressor operates in any of Pattern 1 through Pattern 3 according to the rotation of outdoor units. Pattern 1 RXQ5P Pattern 2 RXQ8P Pattern 3 RXQ14P, 16P, 18P RXQ10P, 12P No. 1 No. 1 INV INV No. 1 No. 2 No. 1 No. 2 No.
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Basic Control Si34-704 RXQ40P, 42P, 44P No. 1 No. 2 No. 4 No. 6 No. 3 No. 5 No. 7 No. 3 No. 1 No. 4 No. 6 No. 2 No. 5 No. 7 No. 2 No. 3 No. 5 No. 7 No. 1 No. 4 No. 6 INV INV STD1 STD2 INV STD1 STD2 RXQ46P, 48P No. 1 No. 4 No. 2 No. 5 No. 7 No. 3 No. 6 No. 8 No. 3 No. 6 No. 1 No. 4 No. 7 No. 2 No. 5 No. 8 No. 2 No. 5 No. 3 No. 6 No. 8 No. 1 No. 4 No. 7 INV INV INV STD1 STD1 STD2 STD1 STD2 RXQ50P, 52P, 54P No. 1 No. 4 No. 7 No. 2 No. 5 No. 8 No. 3 No. 6 No. 9 No. 3 No.
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Si34-704 Basic Control Compressor Step Control (Multi outdoor unit connection is available on the standard connection system) Compressor operations vary with the following steps according to information in "2.2 Compressor PI Control". Furthermore, the operating priority of compressors is subject to information in " Operating Priority and Rotation of Compressors". Stand-alone installation RXQ8PY1 RXQ5PY1 STEP No.
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Basic Control Si34-704 represents the range in which “Hz” is not stepped up. Two-unit multi system RXQ20PY1 (8+12HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 (To increase Step No.
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Si34-704 Basic Control represents the range in which “Hz” is not stepped up. RXQ24PY1 (8+16HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 (To increase Step No.
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Basic Control Si34-704 represents the range in which “Hz” is not stepped up. RXQ28PY1, 30PY1 (10/12+18HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 (To increase Step No.
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Si34-704 Basic Control represents the range in which “Hz” is not stepped up. RXQ 34PY1 (16+18HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 (To increase Step No.
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Basic Control Si34-704 represents the range in which “Hz” is not stepped up. Three-unit multi system RXQ38PY1 (8+12+18HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 (To increase Step No.
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Si34-704 Basic Control represents the range in which “Hz” is not stepped up. RXQ44PY1 (8+18+18HP) RXQ 42PY1 (8+16+18HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 (To increase Step No.
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Basic Control Si34-704 represents the range in which “Hz” is not stepped up. RXQ46PY1, 48PY1 (10/12+18+18HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 (To increase Step No.
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Si34-704 Basic Control RXQ54PY1 (18+18+18HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 (To increase Step No.
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Basic Control 2.3 Si34-704 Electronic Expansion Valve PI Control Main Motorized Valve EV1 Control Fixed to open fully. Subcooling Motorized Valve EV2 Control Makes PI control of the motorized valve (Y2E) to keep the superheated degree of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger.
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Si34-704 Special Control 3. Special Control 3.1 Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.
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Special Control 3.2 Si34-704 Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. 3.2.1 Oil Return Operation in Cooling Operation [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
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Si34-704 3.3 Special Control Pump-down Residual Operation 3.3.1 Pump-down Residual Operation in Cooling Operation If the liquid refrigerant stays in the Evaporator at the startup of a compressor, this liquid refrigerant enters the compressor, thus resulting in diluted oil in the compressor and then degraded lubrication performance. Consequently, in order to recover the refrigerant in the Evaporator while the compressor stops, the pump-down residual operation is conducted.
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Special Control 3.4 Si34-704 Standby 3.4.1 Restart Standby Used to forcedly stop the compressor for a period of 3 minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system.
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Si34-704 3.5 Special Control Stopping Operation 3.5.1 When System is in Stop Mode (Normal operation stop) This mode is used to define actuator operations when the system stops. Actuator Operation Compressor OFF Outdoor unit fan OFF Four way valve Holds Main motorized valve (EV1) 0 pls Subcooling motorized valve (EV2) 0 pls Hot gas bypass valve (SVP) OFF Accumulator oil return valve (SVO) OFF Injection (SVT) (RXQ5P model only) OFF Ending conditions Indoor unit thermostat is turned ON.
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Special Control Si34-704 3.5.3 Stopping Operation of Slave Units During Master Unit is in Operation with Multi-Outdoor-Unit System While the master unit is in operation, this mode is used to set the refrigerant flow rate to a required level using a slave unit in the stopped mode. In cooling operation: Same as that of normal operation stop. In heating operation: The system operates with following mode.
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Si34-704 Protection Control 4. Protection Control 4.1 High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. ★ In the case of multi-outdoor-unit system, each outdoor unit performs this control individually in the following sequence.
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Protection Control 4.2 Si34-704 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. ★ In the case of multi-outdoor-unit system, the entire system performs this control in the following sequence. Low pressure not limited Pe<0.34MPa Pe: LP pressure sensor detection value for master unit Pe>0.39MPa Low pressure limited All STD compressors stop. Hot gas SVP = OFF Pe<0.15MPa Pe>0.30MPa Pe<0.
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Si34-704 4.3 Protection Control Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. ★ Each compressor performs the discharge pipe temperature protection control individually in the following sequence.
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Protection Control 4.4 Si34-704 Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. ★ In the case of multi-outdoor-unit system, each INV compressor performs these controls in the following sequence. [Inverter overcurrent protection control] Nomal operation Invertercurrent >14.
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Si34-704 4.5 Protection Control STD Compressor Overload Protection This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking. STD compressor ON Demand to operate. *If the power supply is reset while in CT detection current value>15.0A operation prohibition mode, the prohibition timer will continue counting when the power supply is turned ON. STD compressor OFF for 30 min.
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Other Control Si34-704 5. Other Control 5.1 Outdoor Unit Rotation In the case of multi-outdoor-unit system, this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units. [Details of outdoor unit rotation] In the case of multi-outdoor-unit system, each outdoor unit is given an operating priority for the control. Outdoor unit rotation makes it possible to change the operating priority of outdoor units.
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Si34-704 5.2 Other Control Emergency Operation If the compressor cannot operate, this control inhibits any applicable compressor or outdoor unit from operating to perform emergency operation only with the operative compressor or outdoor unit. Caution In order to disable the compressor operation due to a failure or else, be sure to do so in emergency operation mode. NEVER attempt to disconnect power supply wires from magnetic contactors or else.
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Other Control Si34-704 5.2.2 In the Case of 1-Outdoor-Unit System (RXQ8P to 18P) [Set the system to operation prohibition mode by compressor] • In order to set an INV compressor to operation LED display (7:ON 7:OFF 9:Blink) prohibition mode, set No. 42 of Setting mode 2 to H1P----H7P "EMERGENCY OPERATION". (Procedure) (1) Press and hold the MODE button (BS1) for a period of 5 seconds or more. (2) Press the SET button (BS2) 42 times. (3) Press the RETURN button (BS3) once.
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Si34-704 Other Control Note : Function In order to forcedly clear the automatic backup operation, reset the power supply with the outdoor unit in the stopped state.
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Other Control Si34-704 [Emergency operation with settings in service mode] ∗ “Inhibition of operation” is set with each outdoor unit. Make the following settings with the master unit. (Setting with the slave unit becomes disabled.) ∗ Discriminate the operating status of the master unit / slave units through the following LED display.
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Si34-704 5.3 Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting” or “Demand 2 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adapter is required. Set item Demand 1 Demand 2 Function Condition Content Mode 1 Mode 2 The compressor operates at approx. 60% or less of rating. The compressor operates at approx.
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Outline of Control (Indoor Unit) Si34-704 6. Outline of Control (Indoor Unit) 6.1 Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.1.1 When the Float Switch is Tripped While the Cooling Thermostat is ON: ∗ 1. The objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation. 6.1.
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Si34-704 Outline of Control (Indoor Unit) 6.1.3 When the Float Switch is Tripped and “AF” is Displayed on the Remote Controller: Note: Function If the float switch is tripped five times in succession, a drain malfunction is determined to have occurred. “AF” is then displayed as operation continues.
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Outline of Control (Indoor Unit) 6.2 Si34-704 Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled. (This feature is available on double flow, multiflow and corner types.
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Si34-704 6.3 Outline of Control (Indoor Unit) Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use”.
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Outline of Control (Indoor Unit) 6.4 Si34-704 Thermostat Control while in Normal Operation VRV multi systems are set at factory to thermostat control mode using the remote controller. While in normal thermostat differential control mode (i.e., factory set mode), the thermostat turns OFF when the system reaches a temperature of -1°C from the set temperature while in cooling operation or of +1°C from that while in heating operation.
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Si34-704 6.6 Outline of Control (Indoor Unit) Electronic Expansion Valve Control • Electronic expansion Valve Control In cooling, to maximize the capacity of indoor unit heat exchanger (evaporator), operate the electronic expansion valve under PI control so that the evaporator outlet superheated degree (SH) will become constant.
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Outline of Control (Indoor Unit) 6.7 Si34-704 Freeze Prevention Freeze Prevention by Off Cycle (Indoor Unit) When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat exchanger drops too low, the unit enters freeze prevention operation in accordance with the following conditions, and is also set in accordance with the conditions given below. Conditions for starting freeze prevention: Temperature is -1°C or less for total of 40 min.
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Si34-704 6.8 Outline of Control (Indoor Unit) List of Swing Flap Operations Swing flaps operate as shown in table below.
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Outline of Control (Indoor Unit) 6.9 Si34-704 Control of Outdoor Air Processing Unit (Unique Control for Outdoor Air Processing Unit) 6.9.1 Selection of Operation Mode (by suction air thermostat) Objective To select cooling, heating, or fan operation mode according to the suction air (outdoor air) temperature.
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Si34-704 Outline of Control (Indoor Unit) 6.9.2 Discharge Air Temperature Control Used to control the EV (electronic expansion valve) opening and thermostat ON/OFF so as to keep the discharge air temperature at the set temperature. (1) Cooling operations T3 Refrigerant Discharge air CPU Ts T1 T4 T2 Temp. Setting EV Refrigerant T1: Temperature detected by suction air thermistor Th1 T2: Temperature detected by liquid pipe temp. thermistor Th2 T3: Temperature detected by gas pipe temp.
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Outline of Control (Indoor Unit) Si34-704 (3) Thermostat OFF by discharge air temperature Target discharge air temp. Ts – Discharge air temp. T4 >5 degree continue for 5 minutes. →Thermostat stops for 1 minute. →Thermostat ON 6.9.3 Low Outdoor Air Temperature Protection Control Objective In cooling (or fan operation) or heating, if outdoor air is low in temperature, stop the fan forcibly.
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Si34-704 Part 5 Test Operation 1. Test Operation ....................................................................................128 1.1 Installation Process ..............................................................................128 1.2 Procedure and Outline .........................................................................129 1.3 Operation when Power is Turned On ...................................................143 2. Outdoor Unit PC Board Layout ......................................
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Test Operation Si34-704 1. Test Operation 1.1 Installation Process Below Figure shows the installation process. Install in the order of the steps shown. 3. Selection of Location 4. Inspecting and Handling the Unit 5. Placing the Unit 7. Field Wiring 6. Refrigerant Piping 8. Airtight Test and Vacuum Drying 9. Pipe Insulation 10. Checking of Device and Installation Conditions 11. Additional Refrigerant Charge and Check Operation Operations which require the power to be turned on. 13.
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Si34-704 1.2 Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.2.1 Check Work Prior to Turn Power Supply On Check the below items.
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Test Operation Si34-704 1.2.2 Turn Power On Turn outdoor unit and indoor unit power on. Be sure to turn the power on 6 hours before starting operation to protect compressors. (to power on clankcase heater) Check the LED display of the outdoor unit PC board. Check to be sure the transmission is normal. The transmission is normal if the LEDs display conditions as shown in table below.
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Si34-704 Test Operation 1.2.3 Air Tight Test and Vacuum Drying Note: Always use nitrogen gas for the airtightness test. Absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed. (measuring after the shutoff valve is opened will cause the insulation value to drop.) 1.2.3.
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Test Operation 1.2.3.2 Si34-704 Air Tight Test and Vacuum Drying Method After finished piping work, carry out air tight test and vacuum drying. Pressurize the liquid and gas pipes to 4.0MPa (40bar) (do not pressurize more than 4.0MPa (40bar)). If the pressure does not drop within 24 hours, the system passes the test. If there is a pressure drop, check for leaks, make repairs, and perform the airtight test again.
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Si34-704 Test Operation [Shutoff Valve Operation Procedure] When operating the shutoff valve, follow the procedure instructed below. Note: Do not open the shutoff valve until “1.2.1 Check work prior to turn power supply on” in page 129 are completed. If the shutoff valve is left open without turning on the power, it may cause refrigerant to buildup in the compressor, leading insulation degradation. Be sure to use the correct tools. The shutoff valve is not a back-seat type.
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Test Operation Si34-704 [How to Check How Many Units are Connected] It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the PC-board (A1P) of outdoor unit (In case of multi system master unit). Follow the procedure below to check how many indoor or outdoor units are turned on. LED display (LED display:3 ...OFF 4 ...ON 5 ...Blinking ∗ ...Uncertain) 1. Press the MODE button (BS1) once, and set the MONITOR MODE (H1P: Blinking). 2.
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Si34-704 1.2.4.2 Test Operation Procedure of Adding Refrigerant Charging and Check Operation Warning Electric Shock Warning Make sure to close the EL. COMPO. BOX lid before turning on the power when performing the refrigerant charging operation. Perform the setting on the PC-board (A1P) of the outdoor unit and check the LED display after the power is on via the inspection door which is in the EL. COMPO. BOX lid. Use an insulated rod to operate the push buttons via the EL. COMPO.
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Test Operation Si34-704 3. Open the valve C (See the figure 31. The valve A, B and the liquid and gas side shutout valve must be left closed), and charge the refrigerant of the “additional charging amount” from the liquid side shutout valve service port. If the “additional charging amount” was charged fully, close the valve C and go to step 5. If the “additional charging amount” was not charged fully, go to step 4.
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Si34-704 Test Operation [Refrigerant Charging Operation Procedure] STEP1 Open the liquid and gas side shutoff valves (The valve A~C must be closed. The valve A~C means the valves in the figure 33.) [Display of normal system] SERV. MONI- MODE TEST/ LED display HWL (Default status of shipped) TOR IND L.N.O.
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Test Operation Si34-704 NOTE: • For check operation, the following work will be performed. Check of shutoff valve opening Check of miswiring Judgment of piping length Check of refrigerant overcharge • It takes about 40 minutes to complete the check operation. [Check Operation Procedure] STEP1 Make the onsite setting as needed using the dip switches on the outdoor unit PC-board (A1P) with the power off (See “1.2.5.1 Onsite Settings With the Power Off”) STEP2 Close the EL. COMPO.
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Si34-704 Test Operation [Remote controller displays malfunction code] Malfunction Installation error code E3, E4 The shutoff valve of the outdoor F3, F6 unit is left closed. UF The phases of the power to the U1 outdoor unit is reversed. U1 No power is supplied to an outdoor U4 or indoor unit (including phase LC interruption). There is conflict on the connection UF of transmission wiring in the system. E3 F6 UF Refrigerant overcharge. E4 F3 Insufficient refrigerant.
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Test Operation Si34-704 1.2.5 Onsite Settings NOTE: In the case of a multi system, all onsite settings should be made on the master unit. Settings made on sub units are invalid. The outdoor unit to which the indoor unit transmission wire are connected is the master unit, and all other units are sub units. 1.2.5.
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Si34-704 Test Operation 1.2.6 Test Run 1.2.6.1 Before Test Run • Make sure the following works are completed in accordance with the installation manual. Piping work Wiring work Air tight test Vacuum drying Additional refrigerant charge • Check that all work for the indoor unit are finished and there are no danger to operate. 1.2.6.2 Test Run After check operation is completed, operate the unit normally and check the following. (1) Make sure the indoor and outdoor units are operating normally.
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Test Operation 1.2.6.3 Si34-704 Checks after Test Run Perform the following checks after the test run is complete. • Record the contents of field setting. →Record them on the accessory “REQUEST FOR THE INDICATION” label. And attach the label on the back side of the front panel. • Record the installation date. →Record the installation date on the accessory “REQUEST FOR THE INDICATION” label in accordance with the IEC60335-2-40. And attach the label on the back side of the front panel.
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Si34-704 1.3 Test Operation Operation when Power is Turned On 1.3.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor-outdoor address, etc.). Status Outdoor unit Test lamp H2P .... Blinks Can also be set during operation described above. Indoor unit If ON button is pushed during operation described above, the "UH" malfunction indicator blinks. (Returns to normal when automatic setting is complete.) 1.3.
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Outdoor Unit PC Board Layout Si34-704 2.
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Si34-704 Field Setting 3. Field Setting 3.1 Field Setting from Remote Controller Individual function of indoor unit can be changed from the remote controller. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description. Wrong setting may cause malfunction. (When optional accessory is mounted on the indoor unit, setting for the indoor unit may be required to change. Refer to information in the option handbook.) 3.1.
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Field Setting Si34-704 3.1.2 Wireless Remote Controller - Indoor Unit BRC7C type BRC7E type BRC4C type 1. When in the normal mode, push the “ ” button for 4 seconds or more, and operation then enters the “field set mode.” 2. Select the desired “mode No.” with the “ ” button. 3. Pushing the “ ” button, select the first code No. 4. Pushing the “ ” button, select the second code No. 5. Push the timer “ ” button and check the settings. 6. Push the “ ” button to return to the normal mode.
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Si34-704 Field Setting 3.1.3 Simplified Remote Controller BRC2A51 BRC2C51 1. Remove the upper part of remote controller. 2. When in the normal mode, press the [BS6] BUTTON ( ) (field set), and the FIELD SET MODE is entered. 3. Select the desired MODE No. with the [BS2] BUTTON ( ) (temperature setting ▲) and the [BS3] BUTTON ( ) (temperature setting ▼). 4. During group control, when setting by each indoor unit (mode No. 20, 22, and 23 have been selected), push the [BS8] ( ) BUTTON (unit No.
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Field Setting Si34-704 3.1.4 Setting Contents and Code No. – VRV Indoor unit VRV Mode Setting Setting Contents system No. Switch No. indoor Note 2 unit 0 Filter contamination heavy/ settings 10(20) light (Setting for display time to clean air filter) (Sets display time to clean air filter to half when there is heavy filter contamination.) 12(22) 13(23) 15(25) Super long life filter Light 02 Approx. 10,000 hrs. 03 04 — — Super long life filter — — Heavy Approx. 5,000 hrs.
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Si34-704 Field Setting 3.1.
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Field Setting Si34-704 External ON/OFF input This input is used for "ON / OFF operation" and "Protection device input" from the outside. The input is performed from the T1-T1 terminal of the operation terminal block (X1A) in the electric component box. F2 T1 T2 Forced stop Input A Setting Table Mode No. Setting Switch No. Setting Position No.
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Si34-704 Field Setting Air Flow Adjustment - Ceiling height Make the following setting according to the ceiling height. The setting position No. is set to “01” at the factory. In the Case of FXAQ, FXHQ Mode No. Setting Switch No. 13(23) 0 Setting Position Setting No. 01 Wall-mounted type: Standard 02 03 Wall-mounted type: Slight increase Wall-mounted type: Normal increase In the Case of FXFQ25~80 Mode No. 13 (23) First Second code code No. No.
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Field Setting Si34-704 Setting of Air Flow Direction Adjustment Range Make the following air flow direction setting according to the respective purpose. Setting Table Mode No. First Code No. 13 (23) Second Code No. Setting 01 Upward (Draft prevention) Standard 4 02 Downward (Ceiling soiling prevention) 03 Air flow rate switching at discharge grille for field air flow rate switching When the optional parts (high performance filter, etc.
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Si34-704 Field Setting 3.1.8 Centralized Control Group No. Setting BRC1A Type In order to conduct the central remote control using the central remote controller and the unified ON/OFF controller, Group No. settings should be made by group using the operating remote controller. Make Group No. settings for central remote control using the operating remote controller. 1. While in normal mode, press and hold the switch for a period of four seconds or more to set the system to "Field Setting Mode".” 2.
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Field Setting Si34-704 Group No. setting by wireless remote controller for centralized control 1. When in the normal mode, push “ ” button for 4 seconds or more, and operation then enters the “field set mode.” 2. Set mode No. “00” with “ ” button. 3. Set the group No. for each group with “ ”“ ” button (advance/backward). 4. Enter the selected group numbers by pushing “ ” button. 5. Push “ ” button and return to the normal mode. BRC7C Type BRC7E Type BRC4C Type Group No.
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Si34-704 Field Setting 3.1.9 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions. (Refer to information in the next page.) Central remote controller is normally available for operations.
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Field Setting How to Select Operation Mode Example ON by remote controller (Unified ON by central remote controller) ↓ Rejection Si34-704 Whether operation by remote controller will be possible or not for turning on/off, controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below.
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Si34-704 Field Setting 3.2 Field Setting from Outdoor Unit 3.2.1 Field Setting from Outdoor Unit List of Field Setting Items This following section indicates the list of field setting items. For the lists of dip switch contents, Setting mode 1, and Setting mode 2, refer to information in tables shown on the following page onward. For setting items of (*1), refer to detailed information provided on page 169 onward.
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Field Setting Si34-704 Setting item 1 2 Service setting 3 Content and objective of setting Indoor unit fan Used to operate the indoor unit in the Set No. 5 of "Setting mode 2" to indoor unit forced H operation stopped state in forced H operation mode. forced fan H. Indoor unit forced Used to operate the indoor unit in forced operation operation mode.
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Si34-704 Field Setting Setting by dip switches Using dip switches on the PC board enables field setting shown below. However, make no changes of factory settings except for DS1-1. Dipswitch No. DS1-1 Setting ON OFF (Factory set) Setting item Description Cool / Heat select Used to set cool / heat select by Cool/Heat selector equipped with outdoor unit. DS1-2 ~DS1-4 ON OFF (Factory set) Not used Do not change the factory settings.
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Field Setting Si34-704 “Detail of DS1-1~4, DS2-1~4 setting” (for Overseas general) Unit 160 Setting method ( represents the position of switches) Cooling Only (5HP) RXQ5PY1 Set DS2-1 to ON. Cooling Only (8HP) RXQ8PY1 Set DS2-1 and DS2-3 to ON. Cooling Only (10HP) RXQ10PY1 Set DS2-1, DS2-2 and DS2-3 to ON. Cooling Only (12HP) RXQ12PY1 Set DS2-1 and DS2-4 to ON. Cooling Only (14HP) RXQ14PY1 Set DS2-1, DS2-2 and DS2-4 to ON. Cooling Only (16HP) RXQ16PY1 Set DS2-1, DS2-3 and DS2-4 to ON.
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Si34-704 Field Setting Setting by pushbutton switches The following settings are made by pushbutton switches on PC board. In case of multi-outdoor unit system, various items should be set with the master unit. (Setting with the slave unit is disabled.) The master unit and slave unit can be discriminated with the LED display as shown below.
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Field Setting Si34-704 a. “Setting mode 1” This mode is used to set and check the following items. 1. Check items ······· The following items can be checked.
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Si34-704 Field Setting No. b. “Setting mode 2” Push and hold the MODE (BS1) button for 5 seconds and set to “Setting mode 2”. Push the SET (BS2) button and set the LED display to a setting item shown in the table on the right. ↓ Push the RETURN (BS3) button and decide the item. (The present setting condition is blinked.) Digital pressure gauge kit display 1 Sets address for cool/heat unified operation.
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Field Setting Si34-704 No. 35 38 39 164 Setting item Description Setting of difference Make the setting when the outdoor unit is installed 40 m in elevation for the or more below the indoor unit.
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Si34-704 Field Setting Setting item display No.
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Field Setting Si34-704 Setting item display No.
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Si34-704 Field Setting c. Monitor mode No. To enter the monitor mode, push the MODE (BS1) button when in “Setting mode 1”. Setting item Push the RETURN (BS3) button to display different data of set items. Push the RETURN (BS3) button and switches to the initial status of “Monitor mode”. ∗ Push the MODE (BS1) button and returns to “Setting mode 1”.
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Field Setting Si34-704 Setting item 0 Display contents of “Number of units for various settings” EMG operation / backup operation setting ON Defrost select setting Short OFF Medium Long Te setting H M L Tc setting H M L 9 9 9 9 9 9 9 9 9 9 9 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 8 7 7 7 7 7 7 7 7 7 7 7 7 8 9 7 7 7 7 7 7 7 7 7 7 7 7 8 9 7 7 7 7 7 7 7 7 7 7 7 7 8 9 7 Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting.
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Si34-704 Field Setting 3.2.2 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adapter (optional), you can lower operating noise by 2-3 dB. Setting Content Mode 1 Mode 2 Set the outdoor unit fan to Step 6 or lower. Set the outdoor unit fan to Step 5 or lower. Mode 3 Set the outdoor unit fan to Step 4 or lower. A.
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Field Setting Si34-704 Image of operation in the case of A Operation sound Rated operation sound Operation sound of level 1 Approx. 55 db (target) Operation sound of level 2 Approx. 50 db (target) Operation sound of level 3 Approx. 45 db (target) Note1: Above values are reference only (measured in silent room) Note2: Above values are for 1 module only.
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Si34-704 Field Setting Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adapter (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Set item Demand 1 Demand 2 Condition Content Mode 1 Mode 2 The compressor operates at approx. 60% or less of rating. The compressor operates at approx. 70% or less of rating. Mode 3  The compressor operates at approx.
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Field Setting Si34-704 Image of operation in the case of A Power consumption Rated power consumption 80 % of rated power consumption 70 % of rated power consumption 60 % of rated power consumption Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing Power consumption set by "Demand 1 level setting". 40 % of rated power consumption Forced thermostat OFF (Fan operation) The power consumption during the demand level 1 instructing can be set with the "Demand 1 level setting".
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Si34-704 Field Setting Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) c In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 2 is entered and H1P lights. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed. 2. Setting mode 2 (H1P on) c In setting 1, push and hold the BS1 (MODE button) for more than 5 seconds. → Setting mode 2 is entered and H1P lights.
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Field Setting Si34-704 {: ON d c Setting No. Setting contents 22 External low noise / Demand setting { z z z z Setting No.
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Si34-704 Field Setting 3.2.3 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of indoor and outdoor units. All indoor and outdoor unit’s operation are prohibited. [Operation procedure] c In setting mode 2 with units in stop mode, set “Refrigerant Recovery / Vacuuming mode” to ON. The respective expansion valve of indoor and outdoor units are fully opened.
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Field Setting Si34-704 3.2.4 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. [Operating procedure] c With Setting Mode 2 while the unit stops, set “Refrigerant recovery / Vacuuming mode” to ON. The expansion valves of indoor and outdoor units fully open and some of solenoid valves open.
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Si34-704 Part 6 Troubleshooting 1. Symptom-based Troubleshooting .......................................................179 2. Troubleshooting by Remote Controller ...............................................182 2.1 2.2 2.3 2.4 The INSPECTION / TEST Button.........................................................182 Self-diagnosis by Wired Remote Controller .........................................183 Self-diagnosis by Wireless Remote Controller .....................................
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Si34-704 3.29 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T) ........240 3.30 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T) ................................................242 3.31 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......................243 3.32 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor.......................245 3.33 “L1” Outdoor Unit: Defective Inverter PCB.............................................247 3.
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Si34-704 Symptom-based Troubleshooting 1. Symptom-based Troubleshooting Symptom 1 Supposed Cause The system does not start operation at all. Blowout of fuse(s) Cutout of breaker(s) Countermeasure Turn Off the power supply and then replace the fuse(s). • If the knob of any breaker is in its OFF position, turn ON the power supply. • If the knob of any circuit breaker is in its tripped position, do not turn ON the power supply.
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Symptom-based Troubleshooting Symptom Si34-704 Supposed Cause Countermeasure 7 The airflow rate is not reproduced according to the setting. Even pressing the AIRFLOW RATE SET button makes no changes in the airflow rate. In heating operation, when the Normal operation. room temperature reaches the set degree, the outdoor unit will stop while the indoor unit is brought to fan LL operation so that no one gets cold air. (The fan LL operation is also enabled while in oil return mode in cooling operation.
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Si34-704 Symptom-based Troubleshooting Symptom 15 The outdoor unit After stopping operation compressor or the outdoor unit fan does not stop. Supposed Cause It stops in order to prevent oil or refrigerant from dwelling. Countermeasure Normal operation. It stops after a lapse of approximately 5 to 10 minutes. 16 The outdoor gets While stopping operation hot. The reason is that the compressor Normal operation. is warmed up to provide smooth startup of the system.
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Troubleshooting by Remote Controller Si34-704 2. Troubleshooting by Remote Controller 2.1 The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Indoor unit settings can be made • Filter sign time • Air flow direction • Others Depress Inspection/Test Operation button for more than 4 seconds. Local setting mode Service mode Depress Inspection/Test Operation button for more than 4 seconds. Service data can be obtained.
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Si34-704 2.2 Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop. See page 191 for malfunction code and malfunction contents.
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Troubleshooting by Remote Controller 2.3 Si34-704 Self-diagnosis by Wireless Remote Controller In the Case of BRC7C Type BRC7E Type BRC4C Type If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred. In normal condition, the malfunction code of the last problem is displayed.) 1.
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Si34-704 Troubleshooting by Remote Controller The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed.
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Troubleshooting by Remote Controller 186 Si34-704 Troubleshooting
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Si34-704 2.4 Troubleshooting by Remote Controller Operation of the Remote Controller’s Inspection / Test Operation Button 0 Unit L0 Malfunction code Inspection Malfunction code blinks when a malfunction occurs. Normal display (No display) Inspection/test operation Push the button. 0 Unit L0 Malfunction code Inspection Inspection mode Inspection/test operation Example of capacity code display 0 7 1... Capacity code F... Indoor unit system code C... Indoor unit type code J...
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Troubleshooting by Remote Controller 2.5 Si34-704 Remote Controller Service Mode How to Enter the Service Mode Service Mode Operation Method 188 1. Select the mode No. Set the desired mode No. with the button. (For wireless remote controller, Mode 43 only can be set.) 2. Select the unit No. (For group control only) Select the indoor unit No. to be set with the time mode . (For wireless remote controller, button.) 3. Make the settings required for each mode.
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Si34-704 Troubleshooting by Remote Controller Mode No 40 Function Malfunction hysteresis display Contents and operation method Remote controller display example Display malfunction hysteresis. The history No. can be changed with the button. Unit 1 Malfunction code 2-U4 40 Malfunction code Hystory No: 1 - 9 1: Latest (VE007) 41 Display of sensor and address data Display various types of data. Select the data to be displayed with the button. Sensor data 0: Thermostat sensor in remote controller.
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Troubleshooting by Remote Controller 2.6 Si34-704 Remote Controller Self-Diagnosis Function The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
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Si34-704 Troubleshooting by Remote Controller Malfunction Operation Inspection code lamp display Indoor Unit Outdoor Unit Troubleshooting Unit No.
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Troubleshooting by Remote Controller Si34-704 8: ON Malfunction Operation Inspection code lamp display Outdoor Unit LA 9 9 System Central Remote Controller and Schedule Timer Heat Reclaim Ventilation Unit No.
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Si34-704 Troubleshooting Troubleshooting by Remote Controller 193
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Troubleshooting by Remote Controller Si34-704 Malfunction code indication by outdoor unit PC board * Refer Page 167 for Monitor mode. Push the SET (BS2) button and set the LED display to a setting item. * Refer Page 167 for Monitor mode. Push the RETURN (BS3) button once to display "First digit" of malfunction code.
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Si34-704 Troubleshooting by Remote Controller 8: ON 7: OFF 9:Blink Malfunction Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 4) code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P E1 9 7 7 9 9 9 7 7 7 9 9 7 7 7 7 9 7 7 9 9 E3 E4 E5 E6 9 9 9 9 9 7 7 7 7 7 (L2) 9 7 7 9 7 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
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Troubleshooting by Remote Controller Si34-704 Contents of malfunction To enter the monitor mode, push the MODE (BS1) button when in “Setting mode 1”. * Refer Page 167 for Monitor mode.
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Si34-704 Troubleshooting by Remote Controller 8: ON 7: OFF 9:Blink Malfunction Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 4) code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P P1 9 9 7 7 7 9 7 7 7 9 9 7 7 7 7 9 7 7 P3 9 7 7 9 9 9 7 7 7 7 9 7 7 P4 9 7 9 7 7 9 7 7 7 7 9 7 7 PJ 9 9 9 7 9 9 9 9 7 7 7 7 9 7 7 7 9 9 7 7 9
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Troubleshooting by Indication on the Remote Controller Si34-704 3. Troubleshooting by Indication on the Remote Controller 3.1 “A0” Indoor Unit: Error of External Protection Device Remote Controller Display A0 Applicable Models All indoor unit models Method of Malfunction Detection Detect open or short circuit between external input terminals in indoor unit.
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Si34-704 3.2 Troubleshooting by Indication on the Remote Controller “A1” Indoor Unit: PC Board Defect Remote Controller Display A1 Applicable Models All indoor unit models Method of Malfunction Detection Check data from E²PROM. Malfunction Decision Conditions When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power supply is turned off.
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Troubleshooting by Indication on the Remote Controller 3.3 Si34-704 “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display A3 Applicable Models FXCQ, FXFQ, FXSQ, FXKQ, FXDQ, FXMQ, FXUQ, FXHQ (Option), FXMQ200,250M (Option), FXAQ (Option) Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch goes OFF.
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Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is power supply 220~240V provided? NO Provide 220~240V power supply. YES The float switch is connected to X8A of the indoor unit PC board. NO YES The float switch contact is forming a short circuit (continuity check with X8A or X15A disconnected) A short circuit connector is connected to X8A.
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Troubleshooting by Indication on the Remote Controller 3.
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Si34-704 3.5 Troubleshooting by Indication on the Remote Controller “A7” Indoor Unit: Malfunction of Swing Flap Motor (M1S) Remote Controller Display A7 Applicable Models FXCQ, FXHQ, FXKQ Method of Malfunction Detection Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Decision Conditions When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time (about 30 seconds).
PAGE 215
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is power supply 220~240V provided? NO Provide 220~240V power supply. YES Indoor unit is a model equipped with a swing flap function NO Replace indoor unit PC board. YES The swing motor works when the power supply is turned off and then back on.
PAGE 216
Si34-704 3.6 Troubleshooting by Indication on the Remote Controller “A9” Electronic Expansion Valve Malfunction / Dust Clogging Remote Controller Display A9 Applicable Models FXFQ25~125M Method of Malfunction Detection Check coil condition of electronic expansion valve by using microcomputer. Check dust clogging condition of electronic expansion valve main body by using microcomputer.
PAGE 217
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. When power is supplied. NO Replace electronic expansion valve main body. YES Electronic expansion valve is connected to X7A of indoor unit PCB. NO Shut the power supply off after connection and then restart. YES Coil check (∗1) of electronic expansion valve drive indicates normal.
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Si34-704 Troubleshooting by Indication on the Remote Controller “A9” Indoor Unit: Malfunction of Electronic Expansion Valve Coil Remote Controller Display A9 Applicable Models Indoor units except FXFQ models Method of Malfunction Detection Check coil condition of electronic expansion valve by using microcomputer. Malfunction Decision Conditions Pin input for electronic expansion valve coil is abnormal when initializing microcomputer.
PAGE 219
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Electronic expansion valve is connected to X7A of indoor unit PCB. NO Shut the power supply off after connection and then restart. YES Coil check (∗1) of electronic expansion valve drive indicates normal. NO Replace coil of electronic expansion valve. YES Relay cables short circuit or disconnected.
PAGE 220
Si34-704 3.7 Troubleshooting by Indication on the Remote Controller “AF” Indoor Unit: Drain Level above Limit Remote Controller Display AF Applicable Models FXCQ, FXFQ, FXSQ, FXKQ, FXMQ, FXDQ, FXUQ Method of Malfunction Detection Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation. Malfunction Decision Conditions Supposed Causes When the float switch changes from ON to OFF while the compressor is in non-operation.
PAGE 221
Troubleshooting by Indication on the Remote Controller 3.8 Si34-704 “AJ” Indoor Unit: Malfunction of Capacity Determination Device Remote controller display AJ Applicable Models All indoor unit models Method of Malfunction Detection Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal is determined.
PAGE 222
Si34-704 3.9 Troubleshooting by Indication on the Remote Controller “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display C4 Applicable Models All indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by heat exchanger thermistor. Malfunction Decision Conditions When the heat exchanger thermistor becomes disconnected or shorted while the unit is running.
PAGE 223
Troubleshooting by Indication on the Remote Controller Si34-704 3.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display C5 Applicable Models All indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by gas pipe thermistor. Malfunction Decision Conditions When the gas pipe thermistor becomes disconnected or shorted while the unit is running.
PAGE 224
Si34-704 Troubleshooting by Indication on the Remote Controller 3.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air Remote Controller Display C9 Applicable Models AII indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by suction air temperature thermistor. Malfunction Decision Conditions When the suction air temperature thermistor becomes disconnected or shorted while the unit is running.
PAGE 225
Troubleshooting by Indication on the Remote Controller Si34-704 3.12 “CA” Indoor unit: Malfunction of Thermistor (R4T) for discharge Air Remote Controller Display CA Applicable Models FXMQ-MF Method of Malfunction Detection Malfunction detection is carried out by temperature detected by discharge air thermistor. Malfunction Decision Conditions When the discharge air thermistor becomes disconnected or shorted while the unit is running.
PAGE 226
Si34-704 Troubleshooting by Indication on the Remote Controller 3.13 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display CJ Applicable Models AII indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by remote controller air temperature thermistor.
PAGE 227
Troubleshooting by Indication on the Remote Controller Si34-704 3.14 “E1” Outdoor Unit: PC Board Defect Remote Controller Display E1 Applicable Models RXQ5P~54P Method of Malfunction Detection Check data from E²PROM Malfunction Decision Conditions When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power supply is turned off.
PAGE 228
Si34-704 Troubleshooting by Indication on the Remote Controller 3.15 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display E3 Applicable Models RXQ5P~54P Method of Malfunction Detection Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Decision Conditions Error is generated when the HPS activation count reaches the number specific to the operation mode.
PAGE 229
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check for the points shown below. Is the stop valve open? Is the HPS connector properly connected to the main PCB? Does the high pressure switch have continuity? Are the three points above OK? NO Rectify defective points, if any. YES Mount a pressure gauge on the high-pressure service port.
PAGE 230
Si34-704 Troubleshooting by Indication on the Remote Controller 3.16 “E4” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display E4 Applicable Models RXQ5P~54P Method of Malfunction Detection Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Decision Conditions Error is generated when the low pressure is dropped under specific pressure. Operating pressure:0.
PAGE 231
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. NO Is the stop valve open? Open the stop valve. YES Mount a pressure gauge on the low-pressure service port. Reset the operation using the remote controller, and then restart the operation. Are the characteristics of the low pressure sensor normal? (See ∗1.) NO Replace the low pressure sensor.
PAGE 232
Si34-704 Troubleshooting by Indication on the Remote Controller 3.17 “E5” Outdoor Unit: Inverter Compressor Motor Lock Remote Controller Display E5 Applicable Models RXQ5P~54P Method of Malfunction Detection Inverter PC board takes the position signal from UVW line connected between the inverter and compressor, and the malfunction is detected when any abnormality is observed in the phasecurrent waveform.
PAGE 233
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open. NO Local factor Open the stop valve. YES Check if the relay wires to the compressor are correct. NO YES Check if the connection of UVW phase order is correct. NO YES Power OFF Check if the wiring is the same as in the electric wiring diagram.
PAGE 234
Si34-704 Troubleshooting by Indication on the Remote Controller 3.18 “E6” Outdoor Unit: STD Compressor Motor Overcurrent/ Lock Remote Controller Display E6 Applicable Models RXQ5P~54P Method of Malfunction Detection Detects the overcurrent with current sensor (CT). Malfunction Decision Conditions Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds. 400 V unit : 15.
PAGE 235
Troubleshooting by Indication on the Remote Controller Si34-704 3.19 “E7” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display E7 Applicable Models RXQ5P~54P Method of Malfunction Detection Detect a malfunction based on the current value in the INVERTER PCB (as for motor 2, current value in the fan PCB). Detect a malfunction for the fan motor circuit based on the number of rotation detected by hole IC during the fan motor operation.
PAGE 236
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check in the monitor mode 12HP ~18HP class models have 2 fans. Check electric motor (electric motor 1 or 2) corresponding to malfunction code “E7” in the monitor mode of outdoor unit PCB. (Refer to P. 194 ~ 195 for how to check) Cut the power supply OFF and wait for 10 minutes.
PAGE 237
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Continued from the previous page. No continuity of fuse (FIU) on the fan inverter PCB. YES Replace fan inverter PCB. NO Unable to rotate the fan manually with ease when removing the connector of the fan motor. YES Replace the corresponding fan motor. NO Resistance value between the power supply wire terminal of fan motor and the motor frame (metal) is 1MΩ and below. YES Replace the corresponding fan motor.
PAGE 238
Si34-704 Troubleshooting by Indication on the Remote Controller 3.20 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y2E) Remote Controller Display E9 Applicable Models RXQ5P~54P Method of Malfunction Detection Check disconnection of connector To be detected based on continuity existence of coil of electronic expansion valve (Y1E) Malfunction Decision Conditions No current is detected in the common (COM [+]) when power supply is ON.
PAGE 239
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Caution Turn power supply off, and turn power supply on again. YES Return to normal? NO External factor other than malfunction (for example, noise etc.). Check the electronic expansion valve corresponding to the malfunction code “E9” in the monitor mode. (Refer to P.194~195 for how to check.
PAGE 240
Si34-704 Troubleshooting by Indication on the Remote Controller 3.21 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display F3 Applicable Models RXQ5P~54P Method of Malfunction Detection Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor.
PAGE 241
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Connect the service checker. Press reset and start operation again. Check if discharge pipe thermister property is normal. (∗1) NO Replace discharge pipe thermister.
PAGE 242
Si34-704 Troubleshooting by Indication on the Remote Controller 3.22 “F6” Outdoor Unit: Refrigerant Overcharged Remote Controller Display F6 Applicable Models RXQ5P~54P Method of Malfunction Detection Excessive charging of refrigerant is detected by using the outside air temperature, heat exchanging deicer temperature and liquid pipe temperature during a check run.
PAGE 243
Troubleshooting by Indication on the Remote Controller Si34-704 3.23 “H7” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display H7 Applicable Models RXQ5P~54P Method of Malfunction Detection Detection of abnormal signal from fan motor. Malfunction Decision Conditions In case of detection of abnormal signal at starting fan motor.
PAGE 244
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the fan motor corresponding to the malfunction code “H7” in the monitor mode. (Refer to P.194 ~ 195 for how to check) When check 3 shows as follows: → Fan motor 1 (M1F) When check 3 shows as follows: → Fan motor 2 (M2F) Identify outdoor unit based on Check 4.
PAGE 245
Troubleshooting by Indication on the Remote Controller Si34-704 3.24 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display H9 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Decision Conditions When the outside air temperature thermistor has short circuit or open circuit.
PAGE 246
Si34-704 Troubleshooting by Indication on the Remote Controller 3.25 “J2” Outdoor Unit: Current Sensor Malfunction Remote Controller Display J2 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected according to the current value detected by current sensor. Malfunction Decision Conditions When the current value detected by current sensor becomes 5A or lower, or 40A or more during standard compressor operation.
PAGE 247
Troubleshooting by Indication on the Remote Controller Si34-704 3.26 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3, R31, 32T) Remote Controller Display J3 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Decision Conditions When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
PAGE 248
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Confirm which discharge thermistor is abnormal using outdoor unit "monitor mode". (Refer page 194 and 195) Connector is connected to X29A of outdoor unit PC board (A1P). NO Connect the connector and turn on again.
PAGE 249
Troubleshooting by Indication on the Remote Controller Si34-704 3.27 “J5” Outdoor Unit: Malfunction of Thermistor (R2T), (R7T) for Suction Pipe Remote Controller Display J5 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected from the temperature detected by the suction pipe temperature thermistor. Malfunction Decision Conditions When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.
PAGE 250
Si34-704 Troubleshooting by Indication on the Remote Controller 3.28 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display J6 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Decision Conditions When a short circuit or an open circuit in the heat exchange thermistor is detected.
PAGE 251
Troubleshooting by Indication on the Remote Controller Si34-704 3.29 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T) Remote Controller Display J7 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Decision Conditions When the liquid pipe thermistor is short circuited or open.
PAGE 252
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the connector for liquid pipe thermistor connected to X30A on outdoor unit PC board (A1P)? NO Connect the connector and operate unit again. YES Is the resistance measured after removing the thermistor (R6T) from outdoor unit PC board normal? (1.8kΩ to 800kΩ) YES NO Replace thermistor (R6T).
PAGE 253
Troubleshooting by Indication on the Remote Controller Si34-704 3.30 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T) Remote Controller Display J9 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor. Malfunction Decision Conditions When the subcooling heat exchanger gas pipe thermistor is short circuited or open.
PAGE 254
Si34-704 Troubleshooting by Indication on the Remote Controller 3.31 “JA” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display JA Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Decision Conditions When the high pressure sensor is short circuit or open circuit. (Not less than 4.22MPa, or 0.
PAGE 255
Troubleshooting by Indication on the Remote Controller Si34-704 ∗2: Voltage measurement point ∗2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P363.
PAGE 256
Si34-704 Troubleshooting by Indication on the Remote Controller 3.32 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display JC Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected from pressure detected by low pressure sensor. Malfunction Decision Conditions When the low pressure sensor is short circuit or open circuit. (Not less than 1.77MPa, or -0.
PAGE 257
Troubleshooting by Indication on the Remote Controller Si34-704 ∗1: Voltage measurement point ∗2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P363.
PAGE 258
Si34-704 Troubleshooting by Indication on the Remote Controller 3.33 “L1” Outdoor Unit: Defective Inverter PCB Remote Controller Display L1 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected based on the current value during waveform output before starting compressor. Malfunction is detected based on the value from current sensor during synchronous operation when starting the unit. Malfunction Decision Conditions Overcurrent (OCP) flows during waveform output.
PAGE 259
Troubleshooting by Indication on the Remote Controller Si34-704 3.34 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display L4 Applicable Models RXQ5P~54P Method of Malfunction Detection Fin temperature is detected by the thermistor of the radiation fin. Malfunction Decision Conditions When the temperature of the inverter radiation fin increases above 93°C.
PAGE 260
Si34-704 Troubleshooting by Indication on the Remote Controller Inverter PCB for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P361.
PAGE 261
Troubleshooting by Indication on the Remote Controller Si34-704 3.35 “L5” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display L5 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected from current flowing in the power transistor. Malfunction Decision Conditions When an excessive current flows in the power transistor. (Instantaneous overcurrent also causes activation.
PAGE 262
Si34-704 Troubleshooting Troubleshooting by Indication on the Remote Controller Compressor inspection Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open. NO Open the stop valve. YES Check if the compressor lead wires are normal. NO Replace compressor lead wires. YES Check if the wiring and connection to the compressor are normal. NO Correct the wiring and connection.
PAGE 263
Troubleshooting by Indication on the Remote Controller Si34-704 3.36 “L8” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display L8 Applicable Models RXQ5P~54P Method of Malfunction Detection Malfunction is detected by current flowing in the power transistor. Malfunction Decision Conditions When overload in the compressor is detected. (Inverter secondary current 16.1A) 16.1A and over continues for 260 seconds.
PAGE 264
Si34-704 Troubleshooting Troubleshooting by Indication on the Remote Controller Output current check Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open. NO Open the stop valve. YES Check if the compressor lead wires are normal. Check if the wiring and connection to the compressor are normal. NO NO Replace compressor lead wires. Correct the wiring and connection.
PAGE 265
Troubleshooting by Indication on the Remote Controller Si34-704 3.37 “L9” Outdoor Unit: Inverter Compressor Starting Failure Remote Controller Display L9 Applicable Models RXQ5P~54P Method of Malfunction Detection Detect the failure based on the signal waveform of the compressor. Malfunction Decision Conditions Starting the compressor does not complete.
PAGE 266
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if it is the first time to start after installation. NO Go on to the next page. ( Starting failure due to aged operation.) YES Check if a right amount of refrigerant is charged. NO Charge a right amount of refrigerant. YES Check if the stop valve is open. NO Open the stop valve.
PAGE 267
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Continued from the previous page. (Start failure due to aged operation.) Liquid refrigerant is accumulated in compressor ( The unit is out of power supply for more than 6 hours.) NO YES Check if the insulation resistance of the compressor is 100kΩ or over. NO Cancel the liquid refrigerant accumulation state. (Leave the power supply on for more than 6 hours.) Replace the inverter compressor.
PAGE 268
Si34-704 Troubleshooting by Indication on the Remote Controller 3.38 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display LC Applicable Models RXQ5P~54P Method of Malfunction Detection Check the communication state between inverter PC board and control PC board by microcomputer. Malfunction Decision Conditions When the correct communication is not conducted in certain period.
PAGE 269
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Are the fan transmission wire connectors (X3A: Black, X4A: Yellow) wrongly connected? NO Connect the connectors to the corresponding color (black or yellow). YES Power ON Check whether or not the power supply voltage between L2 and N falls in the range of 220 to 240VAC? NO On-site cause. Correct the wiring.
PAGE 270
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting A Is the micro controller normal monitor (green) of the A1P blinking? YES Power ON The A3P, A4P, and A8P do not blink. NO Check 10 or more seconds after the power supply is turned ON. YES NO The A4P or A8P does not blink. YES NO The LC malfunction recurs. YES This is not LC. Recheck for the malfunction code. A3P: Replace the inverter PCB. ∗If the PCB replaced is badly damaged, the compressor is likely to get faulty.
PAGE 271
Troubleshooting by Indication on the Remote Controller Si34-704 3.39 “P1” Outdoor Unit: Inverter Over-Ripple Protection Remote Controller Display P1 Applicable Models RXQ5P~54P Method of Malfunction Detection Imbalance in supply voltage is detected in PC board. Imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter. Consequently, the increased ripple is detected.
PAGE 272
Si34-704 Troubleshooting by Indication on the Remote Controller 3.40 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display P4 Applicable Models RXQ5P~54P Method of Malfunction Detection Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Decision Conditions When the resistance value of thermistor becomes a value equivalent to open or short circuited status.
PAGE 273
Troubleshooting by Indication on the Remote Controller Si34-704 Inverter PCB for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P361.
PAGE 274
Si34-704 Troubleshooting by Indication on the Remote Controller 3.41 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board Remote Controller Display PJ Applicable Models RXQ5P~54P Method of Malfunction Detection The faulty (or no) field setting after replacing main PC board or faulty PC board combination is detected through communications with the inverter.
PAGE 275
Troubleshooting by Indication on the Remote Controller Si34-704 3.42 “UO” Outdoor Unit: Gas Shortage Alert Remote Controller Display U0 Applicable Models RXQ5P~54P Method of Malfunction Detection Detect gas shortage based on the temperature difference between low pressure or suction pipe and heat exchanger. Malfunction Decision Conditions [In cooling mode] Low pressure becomes 0.1MPa or below. [In heating mode] The degree of superheat of suction gas becomes 20 degrees and over.
PAGE 276
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. In cooling mode Set up a pressure gauge at the service port on the low pressure side. Reset the operation using the remote controller then restart. Check if the low pressure is 0.1MPa or below. (∗1) NO Check if the property of low pressure sensor is normal. (∗2) YES NO Replace the low pressure sensor.
PAGE 277
Troubleshooting by Indication on the Remote Controller Si34-704 3.43 “U1” Reverse Phase, Open Phase Remote Controller Display U1 Applicable Models RXQ5P~54P Method of Malfunction Detection The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged. Malfunction Decision Conditions When a significant phase difference is made between phases.
PAGE 278
Si34-704 Troubleshooting by Indication on the Remote Controller 3.44 “U2” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display U2 Applicable Models RXQ5P~54P Method of Malfunction Detection Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
PAGE 279
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check for power supply voltage. Voltage between phases: 380 to 415V Phase voltage: 220 to 240V On-site causes. Make proper wire connections without open phase, erroneous connections, or erroneous order of phases.
PAGE 280
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting A Power OFF Check for connector connections: Remove and insert the connectors shown below. Furthermore, check the connectors for terminal conditions and continuity.
PAGE 281
Troubleshooting by Indication on the Remote Controller Si34-704 3.45 “U3” Outdoor Unit: Check Operation not Executed Remote Controller Display U3 Applicable Models RXQ5P~54P Method of Malfunction Detection Check operation is executed or not Malfunction Decision Conditions Malfunction is decided when the unit starts operation without check operation. Supposed Causes Check operation is not executed.
PAGE 282
Si34-704 Troubleshooting by Indication on the Remote Controller 3.46 “U4” Malfunction of Transmission between Indoor Units Remote Controller Display U4 Applicable Models All model of indoor unit RXQ5P~54P Method of Malfunction Detection Check if the transmission between indoor unit and outdoor unit is correctly executed using microcomputer.
PAGE 283
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the detailed malfunction status in the monitor mode. (Refer to P. 196~197 for how to check.) In Check 4, LED lamp indicates as follows: Go on to the next page. LED lamp display NO ( ) YES Check if indoor unit PCB or outdoor unit PCB has been replaced.
PAGE 284
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Continued from the previous page In Check 4, LED lamp indicates as follows: ( ) Start operation of all the indoor units. Check if all the units indicate “U9”. NO Continue operation. YES Check if more than 2 minutes passed since “U9”was indicated.
PAGE 285
Troubleshooting by Indication on the Remote Controller Si34-704 3.47 “U5” Indoor Unit: Malfunction of Transmission between Remote Controller and Indoor Unit Remote Controller Display U5 Applicable Models All models of indoor units Method of Malfunction Detection In case of controlling with 2-remote controller, check the system using microcomputer is signal transmission between indoor unit and remote controller (main and sub) is normal.
PAGE 286
Si34-704 Troubleshooting by Indication on the Remote Controller 3.48 “U7” Outdoor Unit: Transmission Failure (Across Outdoor Units) Remote Controller Display U7 Applicable Models All models of outdoor units Method of Malfunction Detection Microcomputer checks if transmission between outdoor units.
PAGE 287
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the LED lamps for “Check 3” corresponding to the malfunction code “U7” and for Check 4 in the monitor mode. (Refer to P.
PAGE 288
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Check 3 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 1 Check 4 Check if any disconnection or connection error is detected in connecting wires with outside control adapter. NO Correct the connecting wiring with the outside control adapter. YES Check if the normal condition monitor LED for the outdoor unit PCB blinks.
PAGE 289
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Check 3 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 2 Check 4 Switch cooling/heating in a lump. NO Set the cooling/heating switch of the outside control adapter to “individual”. YES Setting of cooling/heating switch for the outside control adapter is “Master in a lump”.
PAGE 290
Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Check 3 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 3 Check 4 Check the connection status of connecting wires of Multi Slave 1 with outdoor multi. Check if the wiring is not disconnected or is about to be disconnected. NO Replace the outdoor unit main PCB of the Multi Slave 1.
PAGE 291
Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Check 3 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 6 Check 4 Check the connection status of one of the connecting wires of Outdoor Multi. Check if the wiring is broken or disconnected. NO Replace the main PCB of the outdoor unit. YES Correct the connecting wires of the outdoor multi and then reset the power supply.
PAGE 292
Si34-704 Troubleshooting by Indication on the Remote Controller 3.49 “U8” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers Remote Controller Display U8 Applicable Models All models of indoor units Method of Malfunction Detection In case of controlling with 2-remote controller, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal.
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Troubleshooting by Indication on the Remote Controller Si34-704 3.50 “U9” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display U9 Applicable Models All models of indoor units RXQ5P~54P Method of Malfunction Detection Detect malfunction signal for the other indoor units within the circuit by outdoor unit PCB. Malfunction Decision Conditions When the malfunction decision is made on any other indoor unit within the system concerned.
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Si34-704 Troubleshooting by Indication on the Remote Controller 3.51 “UA” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display UA Applicable Models All models of indoor unit RXQ5P~54P Method of Malfunction Detection A difference occurs in data by the type of refrigerant between indoor and outdoor units. The number of indoor units is out of the allowable range.
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Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Check 3 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 1 Check 4 The number of indoor units connected to the same refrigerant circurt system should not be more than 64 units. YES Replace the main PCB of the outdoor unit. NO The number of indoor units exceeds the standard. Check the connection to correct.
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Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting Caution Check 3 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Diagnosis Flow 3 Check 4 Check if the unit is connected to multi. NO Replace the main PCB of the outdoor unit. YES Check if the outdoor unit PCB is replaced with PCB for spare parts. NO YES Check if the unit is not connected to outdoor units of different models.
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Troubleshooting by Indication on the Remote Controller Si34-704 3.52 “UC” Address Duplication of Centralized Controller Remote Controller Display UC Applicable Models All models of indoor unit Centralized controller Method of Malfunction Detection The principal indoor unit detects the same address as that of its own on any other indoor unit. Malfunction Decision Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected.
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Si34-704 Troubleshooting by Indication on the Remote Controller 3.53 “UE” Malfunction of Transmission between Centralized Controller and Indoor Unit Remote Controller Display UE Applicable Models All models of indoor units Centralized controller Schedule timer Method of Malfunction Detection Microcomputer checks if transmission between indoor unit and centralized controller is normal.
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Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the indoor unit for which “UE” is displayed.
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Si34-704 Troubleshooting by Indication on the Remote Controller Troubleshooting A Check the transmission wiring between central equipment for any broken wire. For details, refer to information in the Check 7 . ∗1 Abnormal Correct the wiring. Normal Check the transmission wiring with the master unit central equipment for any broken wire. For details, refer to information in the Abnormal Correct the wiring. Check 7 .
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Troubleshooting by Indication on the Remote Controller Si34-704 3.54 “UF” System is not Set yet Remote Controller Display UF Applicable Models All models of indoor units RXQ5P~54P Method of Malfunction Detection On check operation, the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature.
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Si34-704 Troubleshooting by Indication on the Remote Controller 3.55 “UH” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display UH Applicable Models All models of indoor units RXQ5P~54P Method of Malfunction Detection Detect an indoor unit with no address setting. Malfunction Decision Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected.
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Troubleshooting by Indication on the Remote Controller Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
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Si34-704 Troubleshooting (OP: Central Remote Controller) 4. Troubleshooting (OP: Central Remote Controller) 4.1 “M1” PC Board Defect Remote Controller Display M1 Applicable Models Central remote controller Schedule timer Method of Malfunction Detection Detect an abnormality in the DIII-NET polarity circuit. Malfunction Decision Conditions When + polarity and - polarity are detected at the same time.
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Troubleshooting (OP: Central Remote Controller) 4.2 Si34-704 “M8” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display M8 Applicable Models Central remote controller Schedule timer Method of Malfunction Detection Detect the malfunction according to DIII-NET transmission data. (The system will be automatically reset.) Malfunction Decision Conditions When no master controller is present at the time of the startup of slave controller.
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Si34-704 4.3 Troubleshooting (OP: Central Remote Controller) “MA” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display MA Applicable Models Central remote controller Schedule timer Method of Malfunction Detection Detect the malfunction according to DIII-NET transmission data. Malfunction Decision Conditions When the schedule timer is set to individual use mode, other central component is present. When multiple master controller are present.
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Troubleshooting (OP: Central Remote Controller) Si34-704 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Has the remote control adapter (KRP2A series) been connected? Not available for combined use with the remote control adapter. Dismount the remote control adapter, and then reset power supplies of every central equipment.
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Si34-704 4.4 Troubleshooting (OP: Central Remote Controller) “MC” Address Duplication, Improper Setting Remote Controller Display MC Applicable Models Central remote controller Schedule timer Method of Malfunction Detection Detect the malfunction according to DIII-NET transmission data.
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Troubleshooting (OP: Unified ON/OFF Controller) Si34-704 5. Troubleshooting (OP: Unified ON/OFF Controller) 5.1 Operation Lamp Blinks Remote Controller Display Operation lamp blinks Applicable Models All model of indoor units Unified ON/OFF controller Method of Malfunction Detection Detect the malfunction according to DIII-NET transmission data.
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Si34-704 Troubleshooting (OP: Unified ON/OFF Controller) Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is a malfunction code displayed on the remote controller? YES Diagnose the cause with the air conditioner's failure diagnosis manual. NO Has a once connected indoor unit been removed or its address changed? YES Reset power supply for all optional controllers for centralized control simultaneously.
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Troubleshooting (OP: Unified ON/OFF Controller) 5.2 Si34-704 Display “Under Centralized Control” Blinks (Repeats Single Blink) “under centralized control” (Repeats single blink) Remote Controller Display Applicable Models Unified ON/OFF controller Central remote controller, Schedule timer Method of Malfunction Detection Detect the malfunction according to DIII-NET transmission data. Malfunction Decision Conditions When the centralized controller, which was connected once, shows no response.
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Si34-704 Troubleshooting (OP: Unified ON/OFF Controller) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Caution Has a once connected optional controller for centralized control been disconnected or itsaddress changed? YES Reset power supply simultaneously for all optional controllers for centralized control.
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Troubleshooting (OP: Unified ON/OFF Controller) Si34-704 2A Is the wiring adaptor for electrical appendices connected? YES Cannot be used in combination with a wiring adaptor for electrical appendices. Remove the wiring adaptor for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously.
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Si34-704 5.3 Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Centralized Control” Blinks (Repeats Double Blink) Remote Controller Display “under centralized control” (Repeats double blink) Applicable Models Unified ON/OFF controller Method of Malfunction Detection Detect the malfunction according to DIII-NET transmission data. Malfunction Decision Conditions When no central control addresses are set to indoor units. When no indoor units are connected within the control range.
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Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 1] [CHECK 2] 304 Si34-704 Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected. Red U White V Black W Measure the resistance values between phases U,V,W. (1) Turn off the power supply.
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Si34-704 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 3] Check the Factors of Overheat Operation Identify the defective points referring to the failure factor analysis (FTA) as follows. Hot gas circuit clogging Faulty hot gas bypass control (∗1) Defective solenoid valve coil Defective solenoid valve body ←Check if coil resistance and insulation are normal.
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Troubleshooting (OP: Unified ON/OFF Controller) Si34-704 [CHECK 4] Power Transistor Check Perform the following procedures prior to check. (1) Power Off. (2) Remove all the wiring connected to the PCB where power transistors are mounted on. ∗ Preparing a tester in the analog system is recommended. A tester in the digital system with diode check function will be usable.
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Si34-704 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 5] Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. Local pressure rise [In cooling] If the outdoor unit electronic expansion valve is throttled: (See *1.) Rise in high pressure Faulty high pressure control High pipe resistance Stop valve closed ←Check to be sure the stop valve is open. Bent or crashed pipe ←Conduct visual checks for pipe conditions.
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Troubleshooting (OP: Unified ON/OFF Controller) Si34-704 [CHECK 6] Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] (See *1.) Faulty low pressure control Abnormally low low-pressure (Low evaporating temperature) [In both cooling and heating] (See *2.) [In cooling] If the indoor unit electronic expansion valve is throttled too much: (See *3.
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Si34-704 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 7] Broken Wire Check of the Connecting Wires 1.
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Troubleshooting (OP: Unified ON/OFF Controller) Si34-704 [CHECK 8] Master Unit Central Connector Setting Table The master unit central setting connector (CN1/X1A) is mounted at the factory. • To independently use a single unit of the intelligent Touch controller or a single unit of the central remote controller, do not dismount the master unit central setting connector (i.e., use the connector with the factory setting unchanged).
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Si34-704 Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 9] Master-Slave Unit Setting Table Combination of Intelligent Touch Controller and Central Remote Controller Master #1 Slave #2 ∗ #3 #1 Pattern #4 #2 1-00~4-15 Master/ Slave CRC CRC #3 5-00~8-15 Master/ Slave Master CRC Master — Intelligent Touch controller Master CRC #4 1-00~4-15 Master/ Slave 5-00~8-15 Master/ Slave Master CRC Slave CRC Slave — CRC Slave — — — — Intelligent Touch contro
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Troubleshooting (OP: Unified ON/OFF Controller) 312 Si34-704 Troubleshooting
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Si34-704 Part 7 Appendix 1. Piping Diagrams..................................................................................314 1.1 Outdoor Unit .........................................................................................314 1.2 Indoor Unit............................................................................................318 2. Wiring Diagrams for Reference...........................................................321 2.1 Outdoor Unit ................................................
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Piping Diagrams Si34-704 1. Piping Diagrams 1.
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Si34-704 Piping Diagrams RXQ8PY1 3D050783 Appendix 315
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Piping Diagrams Si34-704 RXQ10PY1, RXQ12PY1 3D050784 316 Appendix
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Si34-704 Piping Diagrams RXQ14PY1, RXQ16PY1, RXQ18PY1 3D050785A Appendix 317
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Piping Diagrams 1.2 Si34-704 Indoor Unit FXCQ, FXFQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas piping connection port Heat exchanger Flare connection : φ15.9 or less Attached piping : Above φ19.
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Si34-704 Piping Diagrams FXDQ 4D043864H Refrigerant pipe connection port diameters (mm) Liquid Model Gas FXDQ20N(A), P / 25N(A), P / 32N(A), P / 40N(A) / 50N(A)VE(T) FXDQ63N(A)VE(T) φ12.7 φ6.4 φ15.9 φ9.5 FXMQ125MF / 200MF / 250MFV1 4D018650B Refrigerant pipe connection port diameters Model Appendix Gas (mm) Liquid FXMQ125MFV1 FXMQ200MFV1 φ15.9 φ19.1 φ9.5 φ9.5 FXMQ250MFV1 φ22.2 φ9.
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Piping Diagrams Si34-704 FXUQ + BEVQ Indoor unit 4D037995F Connection Unit 4D034127B 320 Appendix
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Si34-704 Wiring Diagrams for Reference 2. Wiring Diagrams for Reference 2.
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Wiring Diagrams for Reference Si34-704 3D055258A RXQ8PY1 322 Appendix
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Si34-704 Wiring Diagrams for Reference 3D055259A RXQ10PY1 Appendix 323
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Wiring Diagrams for Reference Si34-704 3D055260A RXQ12PY1 324 Appendix
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Si34-704 Wiring Diagrams for Reference 3D055261A RXQ14PY1, RXQ16PY1, RXQ18PY1 Appendix 325
PAGE 337
Wiring Diagrams for Reference 2.
PAGE 338
Si34-704 Wiring Diagrams for Reference 3D052261B RXQ20P, 22P, 24P, 26P, 28P, 30P, 32P, 34P, 36PY1 Appendix 327
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Wiring Diagrams for Reference Si34-704 C: 3D052262B RXQ38P, 40P, 42P, 44P, 46P, 48P, 50P, 52P, 54PY1 328 Appendix
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Si34-704 2.
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Wiring Diagrams for Reference Si34-704 3D039557A FXCQ40M / 50M / 80M/ 125MVE 330 Appendix
PAGE 342
Si34-704 Wiring Diagrams for Reference 3D039600A FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix 331
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Wiring Diagrams for Reference Si34-704 3D039564C FXKQ25MA / 32MA / 40MA / 63MAVE 332 Appendix
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Si34-704 Wiring Diagrams for Reference 3D045500C FXDQ20P / 25P / 32P FXDQ20NA / 25NA / 32NA / 40NA / 50NA / 63NAVE (with Drain Pump) Appendix 333
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Wiring Diagrams for Reference Si34-704 3D049604A FXDQ20P / 25P / 32P FXDQ20N / 25N / 32N / 40N / 50N / 63NVET (without Drain Pump) 334 Appendix
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Si34-704 Wiring Diagrams for Reference 3D039561A FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE Appendix 335
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Wiring Diagrams for Reference Si34-704 3D039620B FXMQ40MA / 50MA / 63MA / 80MA / 100MA / 125MAVE 336 Appendix
PAGE 348
Si34-704 Wiring Diagrams for Reference 3D039621B FXMQ200MA / 250MAVE Appendix 337
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Wiring Diagrams for Reference Si34-704 3D039801D FXHQ32MA / 63MA / 100MAVE 338 Appendix
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Si34-704 Wiring Diagrams for Reference 3D034206C FXAQ20MA / 25MA / 32MAVE / 40MA / 50MA / 63MAVE Appendix 339
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Wiring Diagrams for Reference Si34-704 3D039826D FXLQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE FXNQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE 340 Appendix
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Si34-704 Wiring Diagrams for Reference 3D044973A FXUQ71MA / 100MA / 125MAV1 Appendix 341
PAGE 353
Wiring Diagrams for Reference Si34-704 FXMQ125MF / 200MF / 250MFV1 3D044996C 342 Appendix
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Si34-704 Wiring Diagrams for Reference BEVQ71MA / 100MA / 125MAVE 3D044901B Appendix 343
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List of Electrical and Functional Parts Si34-704 3. List of Electrical and Functional Parts 3.1 Outdoor Unit 3.1.1 RXQ5PY1~8PY1 Item Name Symbol Model RXQ5PY1 Type Inverter OC protection device RXQ8PY1 JT1GCVDKYR@S M1C 14.
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Si34-704 List of Electrical and Functional Parts 3.1.2 RXQ10PY1~18PY1 Item Name Type OC protection device Type OC protection device Type OC protection device OC protection device Inverter Compressor STD 1 STD 2 Fan motor Pressure protection Temperature protection Others Temperature protection Others Appendix M1C 14.7A JT170G-KYE@T M2C 15.0A M3C — Y1E Y2E Fully closed: 0pls Fully closed: 0pls For M1C S1PH 0 OFF: 4.0 + −0.12 MPa For M2C S2PH OFF: 4.0 +−00.
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List of Electrical and Functional Parts 3.2 Si34-704 Indoor Side 3.2.
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Si34-704 List of Electrical and Functional Parts Model Parts Name Remote Controller Symbol FXKQ 25MAVE FXKQ 32MAVE FXKQ 40MAVE Wired Remote Controller BRC1C62 Wireless Remote Controller BRC4C61 FXKQ 63MAVE Remark Option AC 220~240V 50Hz Fan Motor M1F 1φ15W 4P 1φ20W 4P Thermal Fuse 146°C Motors Drain Pump M1P AC 220-240V (50Hz) PLD-12200DM Thermal Fuse 145°C Swing Motor M1S MP35HCA [3P080801-1] AC200~240V Thermistor (Suction Air) R1T ST8601-13 φ4 L630 20kΩ (25°C) (for Heat Thermist
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List of Electrical and Functional Parts Parts Name Remote Controller Symbol Si34-704 Model Remark FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE 80MVE 100MVE 125MVE Wired Remote Controller BRC1C62 Wireless Remote Controller BRC4C62 Option AC 220~240V 50Hz Fan Motor M1F Motors 1φ50W 1φ65W 1φ85W 1φ125 W Thermal protector 135°C : OFF 87°C : ON Thermal Fuse 152°C Drain Pump M1P AC220-240V (50Hz) PLD-12230DM Thermal Fuse 145°C Thermistor (Suction Air) R1T
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Si34-704 List of Electrical and Functional Parts Model Parts Name Remote Controller Symbol FXHQ 32MAVE FXHQ 63MAVE Wired Remote Controller FXHQ 100MAVE BRC1C62 Wireless Controller Remark Option BRC7E63W AC 220~240V/220V 50Hz/60Hz Fan Motor 1φ63W M1F 1φ130W Thermal protector 130°C : OFF Motors Capacitor for Fan Motor 3.0µF-400V C1R 80°C : ON 9.
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List of Electrical and Functional Parts Si34-704 Model Parts Name Remote Controller Symbol FXLQ 20MAVE FXLQ 25MAVE FXLQ 32MAVE FXLQ 40MAVE Wired Remote Controller BRC1C62 Wireless Remote Controller BRC4C62 FXLQ 50MAVE Remark FXLQ 63MAVE Option AC 220~240V 50Hz Motors Fan Motor M1F 1φ15W 1φ25W Thermal protector 135°C : OFF Capacitor for Fan Motor C1R 1.0µF-400V 0.5µF-400V 1.
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Si34-704 List of Electrical and Functional Parts Parts Name Remote Controller Symbol Model FXUQ71MAV1 FXUQ100MAV1 Wired Remote Controller FXUQ125MAV1 Remark BRC1C62 Option Wireless Remote Controller BRC7C528W AC 220~240V 50Hz Fan Motor M1F 1φ45W 1φ90W Thermal protector 130°C Motors Thermistors Others Drain Pump M1P AC220-240V (50Hz) AC220V (60Hz) PJV-1426 Swing Motor M1S MT8-L[3PA07572-1] AC200~240V Thermistor (Suction Air) R1T ST8601-1 φ4 L=250 20kΩ (25°C) Thermistor (Heat Excha
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Option List Si34-704 4. Option List 4.1 Option List of Controllers Operation Control System Optional Accessories No.
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Si34-704 Option List Building management system 1 1-1 1-2 Part name intelligent Touch Controller No. basic 1-4 2 • Air-Conditioning management system that can be controlled by a compact all-in-one unit. DIII-NET Hardware plus adaptor DCS601A52 • Additional 64 groups (10 outdoor units) is possible. P.P.D. DCS002C51 • P.P.D.: Power Proportional Distribution function Web DCS004A51 • Monitors and controls the air conditioning system using the Internet and Web browser application on a PC.
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Option List 4.2 Si34-704 Option Lists (Outdoor Unit) RXQ5 ~ 18PY1 Optional accessories KRC19-26A Cool/Heat Selector Distributive Cool/Heat Piping Selector RXQ12PY1 RXQ14PY1 RXQ16PY1 RXQ18PY1 RXQ8PY1 RXQ10PY1 RXQ5PY1 KJB111A Fixing box KHRP26M22H, (Max. 4 branch) KHRP26M33H (Max. 8 branch) KHRP26M22H, KHRP26M33H, (Max. 4 branch) (Max. 8 branch) KHRP26M72H (Max. 8 branch) KHRP26A22T KHRP26A22T, KHRP26A33T KHRP26A22T, KHRP26A33T, KHRP26A72T KWC26C160 KWC26C280 KHRP26M22H (Max.
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Si34-704 Option List RXQ16 ~ 18PHY1 RXQ16PHY1 RXQ18PHY1 KRC19-26A Optional accessories Distributive Piping Cool/Heat Selector Cool/Heat Selector KJB111A Fixing box KHRP26M22H, KHRP26M33H, (Max. 4 branch) (Max. 8 branch) KHRP26M72H (Max.
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Piping Installation Point Si34-704 5. Piping Installation Point 5.1 Piping Installation Point 5m or less than 5m Maximum length from a connection kit. 10m or less from first branch. (Equivalent Piping Length 13m) Connection Kit B Connection Kit A Since there is a possibility that oil may be collected on a stop machine side, install piping between outdoor units to go to level or go up to an outdoor unit, and to make a slope.
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Si34-704 5.2 Piping Installation Point The Example of a Wrong Pattern Wrong × Oil is collected to the outdoor unit at the time of a stop, because of bottom omission of piping. (V3039) Wrong × Oil is collected to the low level outdoor unit at the time of a stop, because of downward slope of piping. The example of installation on which oil is not collected.
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Piping Installation Point Si34-704 358 Appendix
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Si34-704 Example of connection (R-410A Type) 6. Example of connection (R-410A Type) Example refrigerant branch using REFNET joint Example of connection (Connection of 8 indoor units) (∗2) In case of multi outdoor system, re-read to the first Outdoor unit multi connection piping kit as seen from the indoor unit.
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Example of connection (R-410A Type) Si34-704 ∗Note 1 When the equivalent pipe length between outdoor and indoor units is 90m or more, the size of main pipes (both gas-side and liquid-side) must be increased. Depending on the length of the piping, the capacity may drop, but even in such case it is able to increase the size of main pipes. 4 1 5 2 3 1. Outdoor unit 2. Main pipes 3. Increase 4. The first refrigerant branch kit 5.
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Si34-704 Thermistor Resistance / Temperature Characteristics 7.
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Thermistor Resistance / Temperature Characteristics Si34-704 Outdoor Unit Thermistors for Discharge Pipe (R3T, R31∼33T) T°C 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 362 0.0 640.44 609.31 579.96 552.00 525.63 500.66 477.01 454.60 433.37 413.24 394.16 376.05 358.88 342.58 327.10 312.41 298.45 285.18 272.58 260.60 249.00 238.36 228.05 218.24 208.90 200.00 191.53 183.46 175.77 168.44 161.45 154.79 148.
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Si34-704 Pressure Sensor 8. Pressure Sensor Detected Pressure PH = 1.38V-0.69 PL = 0.57V-0.
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Method of Checking the Inverter’s Power Transistors and Diode Modules Si34-704 9. Method of Checking the Inverter’s Power Transistors and Diode Modules 9.1 Method of Checking the Inverter’s Power Transistors and Diode Modules Checking failures in power semiconductors mounted on inverter PC board Check the power semiconductors mounted on the inverter PC board by the use of a multiple tester. 1 Multiple tester : Prepare the analog type of multiple tester.
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Si34-704 Method of Checking the Inverter’s Power Transistors and Diode Modules 1. Power module checking When using the analog type of multiple tester, make measurement in resistance measurement mode in the x1kΩ range. No. Measuring point + - 1 2 P3 P3 U V 3 4 P3 U W P3 5 6 V W P3 P3 7 8 N3 N3 U V 9 10 N3 U W N3 11 12 V W N3 N3 Criterion Remark 2 to 15kΩ Not less than 15kΩ (including) It may take time to determine the resistance due to capacitor charge or else. 2 to 15kΩ 2.
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Method of Checking the Inverter’s Power Transistors and Diode Modules Si34-704 366 Appendix
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Si34-704 Part 8 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........................................368 1.1 Outline ..................................................................................................368 1.2 Refrigerant Cylinders............................................................................370 1.3 Service Tools........................................................................................
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Precautions for New Refrigerant (R-410A) Si34-704 1. Precautions for New Refrigerant (R-410A) 1.1 Outline 1.1.1 About Refrigerant R-410A Characteristics of new refrigerant, R-410A 1. Performance Almost the same performance as R-22 and R-407C 2. Pressure Working pressure is approx. 1.4 times more than R-22 and R-407C. 3. Refrigerant composition Few problems in composition control, since it is a Quasi-azeotropic mixture refrigerant.
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Si34-704 Precautions for New Refrigerant (R-410A) Thermodynamic characteristic of R-410A Temperature ( ) Steam pressure (kPa) Liquid Vapor Precautions for New Refrigerant (R-410A) Density (kg/m3 ) Liquid Vapor Specific heat at constant pressure (kJ/kgK) Liquid Vapor Specific enthalpy (kJ/kg) Liquid Vapor Specific entropy (kJ/KgK) Liquid Vapor 369
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Precautions for New Refrigerant (R-410A) 1.2 Si34-704 Refrigerant Cylinders Cylinder specifications 2 The cylinder is painted refrigerant color (pink). 2 The cylinder valve is equipped with a siphon tube. Siphon tube Cylinder Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.
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Si34-704 1.3 Precautions for New Refrigerant (R-410A) Service Tools R-410A is used under higher working pressure, compared to previous refrigerants (R-22,R-407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R-22,R-407C) can not be used for products that use new refrigerants.
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Precautions for New Refrigerant (R-410A) Si34-704 1. Flaring tool Flare gauge Specifications 2 Dimension A Unit:mm Nominal size A +0−0.4 Tube O.D. Do Class-2 (R-410A) Class-1 (Conventional) 1/4 6.35 9.1 9.0 3/8 9.52 13.2 13.0 1/2 12.70 16.6 16.2 5/8 15.88 19.7 19.4 3/4 19.05 24.0 23.3 Differences 2 Change of dimension A Dimension A For class-1: R-407C For class-2: R-410A Conventional flaring tools can be used when the work process is changed.
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Si34-704 Precautions for New Refrigerant (R-410A) 2. Torque wrench Specifications 2 Dimension B Unit:mm Nominal size Class-1 Class-2 Previous 1/2 5/8 24 27 26 29 24 27 No change in tightening torque No change in pipes of other sizes Differences 2 Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B 3.
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Precautions for New Refrigerant (R-410A) Si34-704 4. Leak tester Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5. Refrigerant oil (Air compal) Specifications 2 Contains synthetic oil, therefore it can be used for piping work of every refrigerant cycle.
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Si34-704 Precautions for New Refrigerant (R-410A) 2 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences 2 Change in pressure 2 Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) 2 2 2 Specifications Working pressure 5.08 MPa (51.8 kg/cm2) Rupture pressure 25.4 MPa (259 kg/cm2) Available with and without hand-operate valve that prevents refrigerant from outflow.
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Precautions for New Refrigerant (R-410A) Si34-704 9. Weigher for refrigerant charge Specifications 2 High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g 2 Equipped with pressure-resistant sight glass to check liquid refrigerant charging. 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories. Differences 2 Measurement is based on weight to prevent change of mixing ratio during charging. 10.
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Si34-704 Index A A0 .........................................................................198 A1 .........................................................................199 A3 .........................................................................200 A6 .........................................................................202 A7 .........................................................................203 A9 .................................................................
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Si34-704 L L1 .........................................................................247 L4 .........................................................................248 L5 .........................................................................250 L8 .........................................................................252 L9 .........................................................................254 LC .........................................................................
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Si34-704 S Selection of Pipe Size, Joints and Header ...........357 Service Tools .......................................................371 Setting by pushbutton switches ............................161 Setting Contents and Code No. ...........................148 Setting of Low Noise Operation and Demand Operation ......................................................169 Special Control .......................................................99 Specifications ...............................................
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Si34-704 iv Index
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Si34-704 Drawings & Flow Charts A F Abnormal Discharge Pipe Temperature ...............229 Abnormal Outdoor Fan Motor Signal ...................232 Actuation of High Pressure Switch .......................217 Actuation of Low Pressure Sensor .......................219 Address Duplication of Centralized Controller .....286 Address Duplication, Improper Setting .................297 Fan Motor (M1F) Lock, Overload ........................
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Si34-704 Malfunction of Thermistor (R2T), (R7T) for Suction Pipe ..................................238 Malfunction of Thermistor (R3T) for Gas Pipes .....................................................212 Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger .......................239 Malfunction of Thermostat Sensor in Remote Controller .........................................215 Malfunction of Transmission between Centralized Controller and Indoor Unit ..........
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Warning Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used.