ESIE12-06 Service Manual GQI-Eco Series Heat Pump R-410A 50Hz Smart Classic RZQG71~140L7V1B RZQG71~140L7Y1B RZQSG71~140L7V1B RZQSG71~140L7Y1B
ESIE12-06 GQI-Eco Series Heat Pump R-410A 50Hz 1. Introduction ............................................................................................ iv 1.1 Safety Cautions ....................................................................................... iv 1.2 Used Icons ............................................................................................ viii 1.3 Preface ....................................................................................................
ESIE12-06 3.1 Indoor Unit..............................................................................................98 3.2 Outdoor Unit .........................................................................................102 Part 6 Field Setting ...................................................................121 1. Test Operation ....................................................................................122 1.1 1.2 1.3 1.4 1.5 Pre-run Checks ............................................
ESIE12-06 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 4.28 4.29 4.30 4.31 4.32 4.33 4.34 4.35 4.36 4.37 4.38 4.39 Indoor Unit Fan Motor Abnormality ......................................................187 Capacity Setting Abnormality ...............................................................188 Transmission Error (between Indoor Unit PCB and Adaptor PCB) ......189 Thermistor Abnormality ....................................................
ESIE12-06 Introduction 1. Introduction 1.1 Safety Cautions Cautions and Warnings Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ 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.
Introduction ESIE12-06 Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2 m). Insufficient safety measures may cause a fall accident. In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R-410A refrigerant. The use of materials for R-22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure.
ESIE12-06 Introduction 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
Introduction ESIE12-06 Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame. only Incorrect use of the installation frame and improper installation may cause the equipment to fall, resulting in injury.
ESIE12-06 Introduction Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor. Do not tilt the unit when removing it. The water inside the unit may spill and wet the furniture and floor.
Introduction 1.3 ESIE12-06 Preface Thank you for your continued patronage of Daikin products. This is the new service manual for Daikin's Year 2012 RZQG-L & RZQSG-L series Heat Pump 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 RZQG-L & RZQSG-L series R-410A Heat Pump System.
ESIE12-06 Part 1 General Information 1. Model Names of Indoor / Outdoor Units..................................................2 2. Outlook Outdoor Units.............................................................................
Model Names of Indoor / Outdoor Units ESIE12-06 1. Model Names of Indoor / Outdoor Units For EDP applications Multi Combination Possibilities: • P = Pair • 2 = Twin • 3 = Triple • 4 = Double Twin Note: 2 1. Individual indoor capacities are not given because the combinations are for simultaneous operation (= indoor units installed in the same room) 2. When different indoor models are used in combination, designate the remote controller that is equipped with the most functions as the main unit. 3.
ESIE12-06 Outlook Outdoor Units 2.
Outlook Outdoor Units 4 ESIE12-06 General Information
ESIE12-06 Part 2 Functions 1. Functions.................................................................................................5 1.1 Indoor Unit................................................................................................5 1.2 Outdoor Unit .............................................................................................
Functions ESIE12-06 1. Functions 1.1 Indoor Unit Items Features Control Auto swing Swing pattern selection Switchable fan speed Program “Dry” High ceiling application Two selectable Wired type thermo.
ESIE12-06 Part 3 Specifications 1. Specifications ..........................................................................................8 2. Operation range ....................................................................................
Specifications ESIE12-06 1.
ESIE12-06 Specifications FUQ71BWV1B / RZQG71L7V1B FUQ71BVV1B / RZQG71L7V1B Specifications 9
Specifications ESIE12-06 FHQG71CVEB / RZQG71L7V1B FCQHG71FVEB / RZQG71L7V1B 10 Specifications
ESIE12-06 Specifications FCQG71FVEB / RZQG71L7V1B FBQ71C8VEB / RZQG71L7V1B Specifications 11
Specifications ESIE12-06 FAQ71CVEB / RZQG71L7V1B 12 Specifications
ESIE12-06 Specifications RZQG71L7V1B Specifications 13
Specifications ESIE12-06 RZQG71Y FVQ71CVEB / RZQG71L7Y1B 14 Specifications
ESIE12-06 Specifications FUQ71BWV1B / RZQG71L7Y1B FHQG71CVEB / RZQG71L7Y1B Specifications 15
Specifications ESIE12-06 FCQHG71FVEB / RZQG71L7Y1B FCQG71FVEB / RZQG71L7Y1B 16 Specifications
ESIE12-06 Specifications FBQ71C8VEB / RZQG71L7Y1B FAQ71CVEB / RZQG71L7Y1B Specifications 17
Specifications ESIE12-06 RZQG71L7Y1B 18 Specifications
ESIE12-06 Specifications RZQG100V FVQ100CVEB / RZQG100L7V1B FUQ100BWV1B / RZQG100L7V1B Specifications 19
Specifications ESIE12-06 FUQ100BVV1B / RZQG100L7V1B FHQG100CVEB / RZQG100L7V1B 20 Specifications
ESIE12-06 Specifications FCQHG100FVEB / RZQG100L7V1B FCQG100FVEB / RZQG100L7V1B Specifications 21
Specifications ESIE12-06 FBQ100C8VEB / RZQG100L7V1B FAQ100CVEB / RZQG100L7V1B 22 Specifications
ESIE12-06 Specifications RZQG100L7V1B Specifications 23
Specifications ESIE12-06 RZQG100Y FVQ100CVEB / RZQG100L7Y1B FUQ100BWV1B / RZQG100L7Y1B 24 Specifications
ESIE12-06 Specifications FHQG100CVEB / RZQG100L7Y1B FCQHG100FVEB / RZQG100L7Y1B Specifications 25
Specifications ESIE12-06 FCQG100FVEB / RZQG100L7Y1B FBQ100C8VEB / RZQG100L7Y1B 26 Specifications
ESIE12-06 Specifications FAQ100CVEB / RZQG100L7Y1B Specifications 27
Specifications ESIE12-06 RZQG100L7Y1B 28 Specifications
ESIE12-06 Specifications RZQG125V FVQ125CVEB / RZQG125L7V1B FUQ125BWV1B / RZQG125L7V1B Specifications 29
Specifications ESIE12-06 FUQ125BVV1B / RZQG125L7V1B FHQG125CVEB / RZQG125L7V1B 30 Specifications
ESIE12-06 Specifications FDQ125C7VEB / RZQG125L7V1B FCQHG125FVEB / RZQG125L7V1B Specifications 31
Specifications ESIE12-06 FCQG125FVEB / RZQG125L7V1B FBQ125C8VEB / RZQG125L7V1B 32 Specifications
ESIE12-06 Specifications RZQG125L7V1B Specifications 33
Specifications ESIE12-06 RZQG125Y FVQ125CVEB / RZQG125L7Y1B FUQ125BWV1B / RZQG125L7Y1B 34 Specifications
ESIE12-06 Specifications FHQG125CVEB / RZQG125L7Y1B FDQ125C7VEB / RZQG125L7Y1B Specifications 35
Specifications ESIE12-06 FCQHG125FVEB / RZQG125L7Y1B FCQG125FVEB / RZQG125L7Y1B 36 Specifications
ESIE12-06 Specifications FBQ125C8VEB / RZQG125L7Y1B Specifications 37
Specifications ESIE12-06 RZQG125L7Y1B 38 Specifications
ESIE12-06 Specifications RZQG140V FVQ140CVEB / RZQG140L7V1B FHQG140CVEB / RZQG140L7V1B Specifications 39
Specifications ESIE12-06 FCQHG140FVEB / RZQG140L7V1B FCQG140FVEB / RZQG140L7V1B 40 Specifications
ESIE12-06 Specifications FBQ140C8VEB / RZQG140L7V1B Specifications 41
Specifications ESIE12-06 RZQG140L7V1B 42 Specifications
ESIE12-06 Specifications RZQG140Y FVQ140CVEB / RZQG140L7Y1B FHQG140CVEB / RZQG140L7Y1B Specifications 43
Specifications ESIE12-06 FCQHG140FVEB / RZQG140L7Y1B FCQG140FVEB / RZQG140L7Y1B 44 Specifications
ESIE12-06 Specifications FBQ140C8VEB / RZQG140L7Y1B Specifications 45
Specifications ESIE12-06 RZQG140L7Y1B 46 Specifications
ESIE12-06 Specifications RZQSG71V FVQ71CVEB / RZQSG71L2V1B FHQG71CVEB / RZQSG71L2V1B Specifications 47
Specifications ESIE12-06 FCQHG71FVEB / RZQSG71L2V1B FCQG71FVEB / RZQSG71L2V1B 48 Specifications
ESIE12-06 Specifications FBQ71C8VEB / RZQSG71L2V1B FAQ71CVEB / RZQSG71L2V1B Specifications 49
Specifications ESIE12-06 RZQSG71L2V1B 50 Specifications
ESIE12-06 Specifications RZQSG71V FVQ100CVEB / RZQSG100L7V1B FHQG100CVEB / RZQSG100L7V1B Specifications 51
Specifications ESIE12-06 FCQHG100FVEB / RZQSG100L7V1B FCQG100FVEB / RZQSG100L7V1B 52 Specifications
ESIE12-06 Specifications FBQ100C8VEB / RZQSG100L7V1B FAQ100CVEB / RZQSG100L7V1B Specifications 53
Specifications ESIE12-06 RZQSG100L7V1B 54 Specifications
ESIE12-06 Specifications RZQSG100Y FVQ100CVEB / RZQSG100L7Y1B FHQG100CVEB / RZQSG100L7Y1B Specifications 55
Specifications ESIE12-06 FCQHG100FVEB / RZQSG100L7Y1B FCQG100FVEB / RZQSG100L7Y1B 56 Specifications
ESIE12-06 Specifications FBQ100C8VEB / RZQSG100L7Y1B FAQ100CVEB / RZQSG100L7Y1B Specifications 57
Specifications ESIE12-06 RZQSG100L7Y1B 58 Specifications
ESIE12-06 Specifications RZQSG125V FVQ125CVEB / RZQSG125L7V1B FHQG125CVEB / RZQSG125L7V1B Specifications 59
Specifications ESIE12-06 FDQ125C7VEB / RZQSG125L7V1B FCQHG125FVEB / RZQSG125L7V1B 60 Specifications
ESIE12-06 Specifications FCQG125FVEB / RZQSG125L7V1B FBQ125C8VEB / RZQSG125L7V1B Specifications 61
Specifications ESIE12-06 RZQSG125L7V1B 62 Specifications
ESIE12-06 Specifications RZQSG125Y FVQ125CVEB / RZQSG125L7Y1B FHQG125CVEB / RZQSG125L7Y1B Specifications 63
Specifications ESIE12-06 FDQ125C7VEB / RZQSG125L7Y1B FCQHG125FVEB / RZQSG125L7Y1B 64 Specifications
ESIE12-06 Specifications FCQG125FVEB / RZQSG125L7Y1B FBQ125C8VEB / RZQSG125L7Y1B Specifications 65
Specifications ESIE12-06 RZQSG125L7Y1B 66 Specifications
ESIE12-06 Specifications RZQSG140V FVQ140CVEB / RZQSG140L7V1B FHQG140CVEB / RZQSG140L7V1B Specifications 67
Specifications ESIE12-06 FCQHG140FVEB / RZQSG140L7V1B FCQG140FVEB / RZQSG140L7V1B 68 Specifications
ESIE12-06 Specifications FBQ140C8VEB / RZQSG140L7V1B Specifications 69
Specifications ESIE12-06 RZQSG140L7V1B 70 Specifications
ESIE12-06 Specifications RZQSG140Y FVQ140CVEB / RZQSG140L7Y1B FHQG140CVEB / RZQSG140L7Y1B Specifications 71
Specifications ESIE12-06 FCQHG140FVEB / RZQSG140L7Y1B FCQG140FVEB / RZQSG140L7Y1B 72 Specifications
ESIE12-06 Specifications FBQ140C8VEB / RZQSG140L7Y1B Specifications 73
Specifications ESIE12-06 RZQSG140L7Y1B 74 Specifications
ESIE12-06 Operation range 2.
Operation range ESIE12-06 EDP 76 Specifications
ESIE12-06 Operation range Classic Specifications 77
Operation range 78 ESIE12-06 Specifications
ESIE12-06 Part 4 Remote Controller 1. Wired Remote Controller.......................................................................80 1.1 1.2 1.3 1.4 Applicable Models ..................................................................................80 Names and Functions ............................................................................80 MAIN/SUB Setting when Using 2 Remote Controllers ...........................84 Centralized Control Group No. Setting.........................................
Wired Remote Controller ESIE12-06 1. Wired Remote Controller 1.1 Applicable Models Model Series FCQG-E FHQG-C FCQG-F FCQHG-F FFQ-B9V FBQ-C8 FHQ-B8 FHQG-C FUQ-B8 FAQ-C FUQ-C Remote Controller BRC1D528 BRC1E51/52A7 1.2 Names and Functions 1.2.1 BRC1D528 3 6 23 7 8 9 2 1 10 11 4 12 14 17 22 25 16 13 15 18 19 20 29 21 5 24 33 26 35 27 36 37 28 30 31 32 34 1. ON/OFF BUTTON Press the ON/OFF button to start or stop the system. 2.
ESIE12-06 Wired Remote Controller 10. DAY OF THE WEEK INDICATOR The day of the week indicator shows the current week day (or the set day when reading or programming the schedule timer). 11. CLOCK DISPLAY The clock display indicates the current time (or the action time when reading or programming the schedule timer). 12. MAXIMUM SET TEMPERATURE The maximum set temperature indicates the maximum set temperature when in limit operation. 13.
Wired Remote Controller ESIE12-06 35. FAN SPEED BUTTON This button toggles between L (Low), H (High), HH (very High), 36. AIRFLOW DIRECTION ADJUST BUTTON This button enables to adjust the airflow direction. 37. AIR FILTER CLEANING TIME ICON RESET BUTTON This button is used to reset the air filter cleaning time icon. (Automatic). 1.2.2 BRC1E51/52A7 1. Operation mode selector button 11. LCD (with backlight) 4. Up button 5. Down button 6. Right button 7. Left button 9. Operation lamp 8. On/Off button 3.
ESIE12-06 Wired Remote Controller 6. Right button (Be sure to press the part with the symbol ) Used to highlight the next items on the right-hand side. Each screen is scrolled in the right-hand direction. Home leave settings are enabled with this button kept pressed for at least four seconds. 7. Left button (Be sure to press the part with the symbol ) Used to highlight the next items on the left-hand side. Each screen is scrolled in the left-hand direction.
Wired Remote Controller 1.3 ESIE12-06 MAIN/SUB Setting when Using 2 Remote Controllers Situation The MAIN/SUB setting is necessary when 1 indoor unit is controlled by 2 remote controllers. When you use 2 remote controllers (control panel and separate remote controller), set one to MAIN and the other to SUB. Setting The remote controllers are factory set to MAIN, so you only have to change 1 remote controller from MAIN to SUB. To change a remote controller from MAIN to SUB, proceed as follows: 1.3.
ESIE12-06 1.4 Wired Remote Controller Centralized Control Group No. Setting 1.4.1 BRC1D528 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. During normal mode, press and hold the “ ” button for 4 seconds or more to enter the "Field Setting Mode". 2.
Wired Remote Controller ESIE12-06 1.4.2 BRC1E51/52A7 In order to conduct the centralized remote control using the centralized 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 centralized remote control using the operating remote controller. (1) Press and hold Cancel button for 4 seconds or more. Field setting menu is displayed. (2) Select Group No.
ESIE12-06 Wireless Remote Controller 2. Wireless Remote Controller 2.1 Applicable Models FCQHG-F FCQG-F — Model Series Remote Controller 2.2 FHQG-C BRC7G63 Names and Functions (1) (3) ON OFF H L DOWN (8) (10) C (6) ON OFF UP TEMP FAN H (4) L TIME (11) C hr. (2) M UP (9) hr. FAN DOWN (13) RESERVE CANCEL hr. (5) TIMER (12) MODE (15) hr.
Wireless Remote Controller ESIE12-06 DISPLAY “ ” (SIGNAL TRANSMISSION) 1 This lights up when a signal is being transmitted. 2 DISPLAY “ ” “ ” “ ”“ “ ” (OPERATION MODE) ” This display shows the current OPERATION MODE. DISPLAY “ 3 4 H M L C TIMER MODE START/STOP BUTTON Refer to page 10. TIMER RESERVE/CANCEL BUTTON 13 Refer to page 11. AIR FLOW DIRECTION ADJUST 14 BUTTON Refer to page 9. 12 OPERATION MODE SELECTOR BUTTON ” (SET TEMPERATURE) This display shows the set temperature. hr.
ESIE12-06 2.3 Wireless Remote Controller MAIN/SUB Setting Introduction To set the wireless remote controller, you have to set the address for: The receiver of the wireless remote controller The wireless remote controller. Setting the Address for the Receiver When using both a wired and a wireless remote controller for 1 indoor unit, the wired controller should be set to MAIN. Therefore, set the MAIN/SUB switch (SS1) of the receiver to SUB.
Service Mode ESIE12-06 3. Service Mode 3.1 BRC1D528 3.1.1 Display Service Data Unit No. Second Code No. Mode No. Unit NO. Field Setting Mode SETTING 3 First Code No. 1,2,7 4 TEST 6 5 3 1. Enter the field setting mode. Press the inspection / test operation button for 4 seconds or more. 2. Enter the service mode. After having entered the field setting mode, press the inspection / test operation button for 4 seconds or more. 3. Select the mode No. Set the desired mode No.
ESIE12-06 Service Mode 3.1.2 Service Setting Mode No. Unit No. Second Code No. Mode No. Unit NO. Field Setting Mode SETTING 3 First Code No. 1,2,6 4 5 5 5 Second Code No. TEST 5 Field Setting Mode 3 First Code No. 3 1,2,6 1. Enter the field setting mode. Press the inspection / test operation button for 4 seconds or more. 2. Enter the maintenance mode. After having entered the field setting mode, press the inspection / test operation button for a minimum of 4 seconds. 3.
Inspection Mode ESIE12-06 4. Inspection Mode 4.1 BRC1D528 Normal display (No display) Press the Inspection/test button once. Unit Error code Inspection 0 L0 (1) Inspection mode Press the Inspection/test button once. (1) Inspection mode 0 Unit L0 Error code Inspection Error code blinks when an error occurs. 071 FJJ (2) Indoor unit model code display Press the Inspection/test button once. (2) Indoor unit model code 0 7 1... Capacity code F... Indoor unit system code ∗1 J...
ESIE12-06 Part 5 Function and Control 1. Function of Main Components and Thermistors ...................................94 2. Operation Flow Chart ............................................................................96 2.1 Cooling / Dry Operation..........................................................................96 2.2 Heating Operation ..................................................................................97 3. Function Details .....................................................
Function of Main Components and Thermistors ESIE12-06 1. Function of Main Components and Thermistors RZQG71L (B)Electronic expansion valve Filter Filter R4T Outdoor heat exchanger R6T (C) Four way valve * R2T R3T Indoor heat exchanger R5T Pressure switch (high) S1PH R3T Service port (5/16" flare) R2T R1T Compressor Accumulator Field piping φ9.5 C1220T-O Field piping φ15.
ESIE12-06 Function of Main Components and Thermistors Outdoor Unit (A) Compressor (M1C) Inverter drive unit varies compressor operating frequency to control capacity and other factors. (B) Electronic Expansion Valve (Y1E) Provides control to maintain optimum operating condition for high efficiency. (C) Four Way Valve (Y1S) Changes operation of cooling / heating. Coil energized : heating Coil not energized : cooling Outdoor Air Thermistor (R1T) Used for startup condition control and defrost control.
Operation Flow Chart ESIE12-06 2. Operation Flow Chart 2.
ESIE12-06 2.
Function Details ESIE12-06 3. Function Details 3.1 Indoor Unit 3.1.1 Set Temperature and Control Temperature The relationship between "Set temperature by remote controller" and "Control target temperature" is as shown below.
ESIE12-06 Function Details In dry operation ΔT < -2.5ºC Tro > 24ºC Dry operation Thermostat OFF Δ > -1ºC 24ºC ≥ Tro > 16ºC ΔT < -2ºC Dry operation Thermostat OFF Δ > -1ºC 16ºC ≥ Tro Tr < 13ºC Dry operation Thermostat OFF Tr > 15ºC Note: 1: The thermistor to detect room temperature is as follows according to field setting. · Factory setting: Indoor unit suction air thermistor · When set to remote controller thermistor: Indoor air thermistor in the remote controller 3.1.
Function Details ESIE12-06 Heating When the following condition consists by mounting the adaptor for wiring PCB, the drain pump is turned on. Drain pump Float switch ON OFF 5 min. 5 sec. ON OFF 3.1.6 Control when the Operation Mode is Set to “Auto” Setting the operation mode to “Auto” with the remote controller, the unit is controlled regarding the contents shown below.
ESIE12-06 Function Details Dew condensation prevention control Dry operation with horizontal airflow is carried out for 1 hour. (P2) Note: 1. When there is any change to heating/fan modes, airflow direction and operation ON/OFF state during dew condensation prevention control, this control is reset. 3.1.8 Freeze-up Prevention Control The unit will perform the forced thermostat off function in following conditions: Thermostat off due to freeze-up prevention.
Function Details 3.2 ESIE12-06 Outdoor Unit 3.2.1 Abnormal Stop When the following items show abnormal values, the thermostat turns OFF and error is determined based on the number of retry in order to protect the compressor and other devices. Item Low pressure Criteria 0.12 MPa or less continues for 5 minutes HPS activated or over 3.
ESIE12-06 Function Details 3.2.3 Preheating Operation Control After the compressor has been turned OFF, the preheating operation control will be activated in order to avoid refrigerant from dissolving in the compressor oil and quick increase of heating level during the heating operation. Starting Conditions & • Compressor stopping • 6 hours or less after turning ON the power. • 1 hour or more after turning OFF the compressor. or & • Outdoor air temperature is not declining.
Function Details ESIE12-06 3.2.6 Room Thermostat Control Based on the difference between the set temperature by remote controller and indoor unit suction air temperature, the thermo. is turned on and off. T = Indoor suction air temperature – temperature set by remote controller (Cooling) T = Temperature set by remote controller – indoor suction air temperature (Heating) Thermostat ON Condition T > +0.5°C Thermostat OFF Condition or • ∆T ≤ – 0.5°C continues for 1 minute (for RZQG71L) • ∆T ≤ – 0.
ESIE12-06 Function Details 3.2.7 Compressor Step The compressor operation frequency is controlled in order to keep a constant evaporation temperature in cooling and a constant condensing temperature in heating. Cooling t cool = Remote controller set temperature - Indoor return air temperature. Depending on t cool and the cooling load, the target evaporating temperature will be a value between 2°C and 20°C. Heating t heat = Indoor return air temperature - Remote controller set temperature.
Function Details ESIE12-06 3.2.8 General Electronic Expansion Valve Control When cooling/heating, PI control of electronic expansion valve is conducted to keep the heat exchanger outlet subcooling degree constant. • Target heat exchanger outlet subcooling degree > actual heat exchanger outlet subcooling degree The electronic expansion valve will close. • Target heat exchanger outlet subcooling degree < actual heat exchanger outlet subcooling degree The electronic expansion valve will open.
ESIE12-06 Function Details 3.2.10 Night-time Quiet Operation A. Setting by Remote Controller Night-time quiet operation can be set by field setting from the wired remote controller. By estimating current time based on the change of outdoor air temperature, the low noise operation is automatically performed at night (from 22:00 to 8:00) by limiting the number of revolutions of outdoor unit fan and the operation frequency of the compressor. (The time at night is target.) B.
Function Details ESIE12-06 3.2.12 High Pressure Protection Control In order to prevent abnormal high pressures in the system and hence avoiding activation of the high pressure safety device the below control function will be activated. (Cooling) (Heating) Normal operation Normal operation Hp < 3.42 MPa Hp > 3.53 MPa & • Hp < 3.24 MPa • 30 sec elapsed Compressor operation frequency +1 step/1 min. Compressor operation frequency B Hz 15 times or less Hp > 3.67 MPa Hp < 3.42 MPa • Hp > 3.
ESIE12-06 Function Details 3.2.14 Suction Pipe Superheat Protection Control (Only in Heating Operation) In case the suction superheat value in heating mode is too high, the oil return to the compressor will be insufficient. In order to avoid that the compressor oil will be accumulated in the outdoor unit heat exchanger, the upper limit frequency will be controlled.
Function Details ESIE12-06 3.2.15 Discharge Pipe Temperature Protection Control Electronic expansion valve opening degree and the compressor operating frequency will be controlled in order to avoid abnormal high compressor temperatures. Td: Discharge pipe temperature Compressor Operating Frequency Control Normal operation OR Td > 105°C Compressor upper limit frequency –1 step/20 sec. • Td 110°C continues for 5 minutes OR • Td > A°C Compressor upper limit frequency +1 step/1 min.
ESIE12-06 Function Details 3.2.17 Thermostat OFF due to Outdoor Air Temperature (Only in Heating Operation) If outdoor air temperature is high, the unit conducts forced thermostat OFF at the following temperature to protect the system. Outdoor air temperature > 32°C 3.2.18 Inverter Current Protection Control Restricts compressor operation frequency to prevent compressor from tripping due to inverter overcurrent.
Function Details ESIE12-06 3.2.19 Low Outdoor Air Temperature Control in Cooling Operation Controls compressor and outdoor unit fan under low outdoor air temperature condition to secure pressure difference between high and low pressure. Hp: High pressure Lp: Low pressure Ta: Outdoor air temperature Tfin: Inverter fin temperature OR & Hp-Lp < 0.93MPa Compression ratio < 2.1 Normal operation Hp < 1.86MPa Ta < 25°C Outdoor unit fan +1 step/90 sec.
ESIE12-06 Function Details 3.2.20 Protection Control by Overall Current Monitors the overall current and restricts the upper limit compressor operating frequency to prevent circuit breakers from exceeding the rated capacity. Normal operation Outdoor unit current > upper limit current value Upper limit compressor operating frequency –1 step/6 sec.
Function Details ESIE12-06 3.2.25 Oil Recovery Operation When the compressor runs at low frequency for a long time, the failure of recovering oil may cause the shortage of oil level. Therefore, the oil recovery operation is performed by increasing the compressor operation frequency for five minutes. The more the unit operates at low frequency, the higher the frequency of oil recovery operation becomes. 3.2.
ESIE12-06 Function Details Defrost Control Defrosting complete Defrosting start previous control A Hz Compressor Four way valve Electronic expansion valve 0 Hz ON ON OFF 150 pls 480 pls (wet protection control) 0 pls (5~60 sec.) Outdoor unit fan Indoor unit fan ON 0 pls (5 sec.) ON OFF ON ON OFF Model RZQG71L RZQG100-140L A Step 25 Step 20 Defrost Ending Conditions Defrosting ends when the following conditions have been realized.
Function Details ESIE12-06 3.2.29 Simulated Operation Function In case of a thermistor error, simulated operation is performed in two different ways as shown below even while the error is detected. A. Operation continues while the error code is displayed on the remote controller.
ESIE12-06 Function Details 3.2.30 Test Operation Control When operating in cooling mode for the first time after installation or operating in cooling mode by pressing the indoor unit inspection button, the unit will perform a test operation for about 3 minutes. Make sure that the initial operation after installation is performed by the cooling operation. (Until the test run is complete, the heating operation cannot be performed.
Function Details ESIE12-06 3.2.31 Improved Comfort in Cooling by Te Control You can increase the comfort feeling for the customer by limiting the lower Te value. With higher Te values, the latent capacity will drop (and eventually the sensible capacity). The EER should increase => Similar as high sensible mode in VRV Current setting Te lower limit: Currently it is possible to modify the lower limit of the Te value with field setting (especially used for EDP application).
ESIE12-06 Function Details Cooling: Heating: Note: Function and Control If quick cooling/heating function is selected by the customer via remote controller, the unit will go into quick cooling/heating for 20 minutes, neglecting the selected Te/Tc. After 20 minutes, the selected Te/Tc setting will receive priority again. Example: The customer has to make a choice: Fix the Te Lower limit and/or the Tc upper limit on a certain value. OR Choose the weather dependent Te Lower limit or Tc Upper limit.
Function Details ESIE12-06 limit and/or Tc Upper limit.
ESIE12-06 Part 6 Field Setting 1. Test Operation ....................................................................................122 1.1 1.2 1.3 1.4 1.5 Pre-run Checks ....................................................................................122 Remote Controller Confirmation...........................................................122 Test Run...............................................................................................123 Precautions Regarding Test Run ...................
Test Operation ESIE12-06 1. Test Operation WARNING Note: 1.1 Live parts can be easily touched by accident. Never leave the unit unattended during installation or servicing when the service panel is removed. Never perform a test run with the discharge piping thermistor (R2T) and suction piping thermistor (R3T) removed, as this might break the compressor. Do not touch the drain pump or fan if the indoor unit is operated without attaching the decoration panel.
ESIE12-06 1.3 Test Operation Test Run 1. Make sure the liquid and gas stop valves are open. B A Opening direction A Liquid side B Gas side Remove the cap and turn counterclockwise with a hex wrench until it stops 2. Be sure to close the front side panel before operation, as not doing so can cause electric shock. 3. Be sure to turn power on at least 6 hours before starting operation in order to protect the compressor. 4. Be sure to set the unit to cooling operation mode. 5.
Test Operation 1.5 ESIE12-06 Failure Diagnosis at the Moment of First Installation • • • • • • 124 In case nothing is displayed on the remote controller (the current set temperature does not display), check for any of the following abnormalities before you can diagnose possible malfunction codes. • Disconnection or wiring error (between power supply and outdoor unit, between outdoor unit and indoor units, between indoor unit and remote controller). • The fuse on the outdoor unit PCB may have run out.
ESIE12-06 Field Setting from Remote Controller 2. 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 error. (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.) 2.
Field Setting from Remote Controller ESIE12-06 2.1.2 BRC1E51/52A7 1 Press and hold Cancel button for 4 (1) seconds or more. Field setting menu is displayed. 2 Select Field setting list in the field setting menu, and press Menu/Enter button. Field setting list screen is displayed. 3 Highlight the mode, and select desired “Mode No.” by using button. (Up/Down) 4 In the case of setting per indoor unit during group control (When Mode No.
ESIE12-06 Field Setting from Remote Controller 6 Press Menu/Enter button. Setting (6) (7) confirmation screen is displayed. 7 Select Yes and press Menu/Enter button. Setting details are determined and field setting list screen returns. 8 In the case of multiple setting changes, repeat “(3)” to “(7)”. 9 After all setting changes are completed, press Cancel button twice. Press Menu/Enter button.
Field Setting from Remote Controller 2.2 ESIE12-06 Wireless Remote Controller Mode No. Field setting mode UP button DOWN button RESERVE button First code No. MODE button Second code No. INSPECTION/TEST button Setting To set the field settings, you have to change: “Mode No.” “First code No.” “Second code No.”. To change the field settings, proceed as follows: Step 1 2 3 4 5 6 128 Action Hold down the INSPECTION/TEST button for at least 4 s during normal mode to enter the “Field setting mode”.
ESIE12-06 2.3 Field Setting from Remote Controller Settings Contents and Code No. for Indoor Units Mode No. 10 (20) 11 (21) 12 (22) First Code No. 0 2 3 2 3 4 3 5 6 0 13 (23) 1 4 (2) 15 (25) 5 Note: Second Code No.
Field Setting from Remote Controller ESIE12-06 When using remote controller Set temperature (˚C) 34 Cooling 32 30 28 Room temperature thermistor Suction air thermistor Suction air thermistor Suction air thermistor Suction air thermistor 26 24 22 20 Suction temperature (˚C) 12 14 16 18 20 22 24 26 28 30 32 34 Set temperature (˚C) 30 28 Heating 26 24 Suction air Room temperature thermistor thermistor Suction air thermistor 22 Suction air thermistor Room temperature thermistor
ESIE12-06 Field Setting from Remote Controller Airflow Rate Set the airflow when thermostat OFF by the combination of "Fan OFF at Thermostat OFF" 11(21)-2," Fan speed heating thermostat OFF" 12(22)-3 and "Fan speed cooling thermostat OFF" 12(22)-6. A : 6 minutes OFF / 1 minute LL B : 6 minutes OFF / 1 minute setting airflow C : 6 minutes OFF / 1 minute L Set the airflow by the combination of 3 modes as below. Second Code No. Mode No. First Code No.
Field Setting from Remote Controller ESIE12-06 Automatic Operation Mode Control When selecting “Automatic Operation Mode” with the remote controller, conducts the most comfortable operation in which you do not feel too cool or too hot.
ESIE12-06 Field Setting from Remote Controller Airflow Direction Setting Set the air flow direction of indoor units as below. (Set when optional air outlet blocking pad has been installed.) Mode No. First Code No. 13 (23) 1 Second Code No. 01 02 Setting F : 4-direction air flow T : 3-direction air flow Airflow Range Setting Make the following air flow direction setting according to the respective purpose. Mode No. 13 (23) First Code No. Second Code No.
Field Setting from Remote Controller 2.4 Overview of the Field Setting on the Outdoor Units Remote controller settings Mode No. The table below contains the remote controller settings. First Code No. Description Second Code No. 01 Details 02 03 04 05 0 Night time low noise operation Disabled (Factory setting) Automatic low noise activation Capacity preceding setting (when using KRP58 option) Automatic low noise + capacity preceding — Refer to P135.
ESIE12-06 2.5 Field Setting from Remote Controller Quiet (Low Noise) Operation Purpose Lower the operation sound of the outdoor unit. Setting Silent Operation can be activated by: 1. Automatic control (By field setting from remote controller) 2. External activation (from optional PCB KRP58M) 2.5.1 Quiet (Low Noise) Operation by Automatic Control Table Silent operation can be set by field setting from the wired remote controller: Description Silent Operation Low noise start & stop time Mode No.
Field Setting from Remote Controller ESIE12-06 2.5.2 External Activation from Optional PCB Quiet (low noise) operation can also be activated from the optional PCB.
ESIE12-06 2.6 Field Setting from Remote Controller I-Demand Function Purpose Set a limitation towards the power consumption from the system.(e.g. budget control, limit power consumption during peak moments,..
Field Setting from Remote Controller 2.7 ESIE12-06 Setting for Low Humidity Application Purpose Can be set when using the RZQG units for year round cooling in low humidity applications such as computer rooms (EDP rooms), technical rooms, etc...to increase the capacity of the unit.
ESIE12-06 Graph 1 Field Setting from Remote Controller Target evaporating temperature control in case of factory setting 16(26)-2-01: Te target acceptable area Remote controller setting temp. Te target limited ≤ 20˚C (to protect the comp.) Te target limited ≤ Indoor temp. – 11˚ (not to rising wetbulb) Te (see note) target acceptable area Indoor temp. > setting → Te target down Indoor temp. < setting → Te target up Te target limited ≥ 2˚C (not to freeze) Te target limited ≥ Indoor temp.
Field Setting from Remote Controller Graph 2 ESIE12-06 Target evaporating temperature control when "low humidity application" is selected. Field setting 16(26)-2-03: Te target acceptable area Remote controller setting temp. Te target Te target limited ≤ 20˚C (˚C) (to protect the comp.) Te (see note) target acceptable area Indoor temp. > setting → Te target down Indoor temp. < setting → Te target up Te target limited ≥ 0˚C Freeze protection (40 min. integrated coil temp.
ESIE12-06 Graph 3 Field Setting from Remote Controller Target evaporating temperature control when "low humidity application + freeze up operation prevention" is selected. Field setting 16(26)-2-04: Te target acceptable area Remote controller setting temp. Te target (˚C) Te target limited ≤ 20˚C (to protect the comp.) Te (see note) target acceptable area Indoor temp. > setting → Te target down Indoor temp. < setting → Te target up Te target limited ≥ 2˚C (not to freeze) Freeze protection (40min.
Field Setting from Remote Controller Capacity ESIE12-06 When "low humidity application" is selected. Field setting 16(26)-2-03: Indoor Temp. (°C-WB) Outdoor Temp. (°C-DB) 11 -15 0.62 0.76 0.86 0.95 -10 0.62 0.76 0.86 -5 0.62 0.81 0 0.62 5 14 16 18 19 20 22 24 1.00 1.02 1.07 1.11 0.95 1.00 1.02 1.07 1.11 0.91 1.01 1.06 1.16 1.21 1.26 0.81 0.91 1.01 1.06 1.16 1.21 1.26 0.62 0.81 0.91 1.01 1.06 1.16 1.21 1.26 10 0.62 0.81 0.91 1.01 1.06 1.16 1.
ESIE12-06 Field Setting from Outdoor Unit PCB 3. Field Setting from Outdoor Unit PCB 3.1 Location of DIP Switch and BS Button Various settings are available by using the DIP switches and the BS buttons on the PCB. Display Lamp H3P MODE TEST HWL H4P H5P X205A L.N.O.
Field Setting from Outdoor Unit PCB 3.2 ESIE12-06 Field Setting for Outdoor Unit 3.2.1 Setting by BS Buttons With "Setting mode 1," "Setting mode 2" and "Monitor mode," various settings and data can be checked. (1) Setting mode 1 The initial status (normal operation) is "Setting mode 1." This mode indicates operating status "TEST (test operation)," "HWL (error)," "L.N.O.P (night time quiet operation)" or "DEMAND (demand operation)." (2) Setting mode 2 Each operating status can be modified.
ESIE12-06 Field Setting from Outdoor Unit PCB 3.2.3 Setting Mode 2 In this mode, settings for the following items can be made. Press the MODE (BS1) button for 5 seconds and set to “Setting mode 2”. Press the SET (BS2) button and set the LED display to a setting item (∗1). ↓ Press the RETURN (BS3) button and decide the item. Press the SET (BS2) button and set to the setting condition you want.
Field Setting from Outdoor Unit PCB ESIE12-06 Setting of Demand 2 operation With this setting, compressor operation can be controlled to reduce power consumption. (60% - 80% demand is available when a demand adapter (optional accessory) is used.) Setting item Setting condition Description Operates with 30% of rated 30% demand power consumption. with 40% of rated Demand 2 operation 40% demand (factory setting) Operates power consumption. Operates with 50% of rated 50% demand power consumption.
ESIE12-06 Field Setting from Outdoor Unit PCB Setting of Refrigerant Recovery Mode When a refrigerant recovery unit is connected onsite to recover refrigerant, fully open the expansion valve of the outdoor unit to help the recovery. (1) Stop operation. (2) Turn ON refrigerant recovery mode by performing the following steps. Operating procedure Press the MODE (BS1) button of "Setting mode 1" for 5 seconds or more and set to "Setting mode 2.
Field Setting from Outdoor Unit PCB ESIE12-06 3.2.4 Monitor Mode In this mode, the following items can be checked by using the BS buttons. To enter the monitor mode, press the MODE (BS1) button when in “Setting mode 1”. No. Setting item 1 Press the SET (BS2) button and set the LED display to a setting item. 2 3 4 5 Press the RETURN (BS3) button to display different data of set items.
ESIE12-06 Field Setting from Outdoor Unit PCB 3.2.5 List of Contents of Retry and Error Take the following steps to check contents of retry and error. To enter "Monitor mode," press the MODE (BS1) button when in "Setting mode 1." When SET (BS2) button is pressed, the LED display for RETURN 2 turns ON. Press the SET (BS2) button to set the LED display to retry or error item.
Field Setting from Outdoor Unit PCB ESIE12-06 Outdoor unit 150 Field Setting
ESIE12-06 Field Setting from Outdoor Unit PCB 3.2.
Emergency Operation ESIE12-06 4. Emergency Operation 4.1 Forced Operation As emergency operational methods, there are three methods as shown below. Choose the best method that is suitable for each purpose of use.
ESIE12-06 Emergency Operation Operation by the Test Operation Mode As test run by the test operation mode, there are two methods as shown below. 1. Press the Inspection / Test Operation button 4 times. Press the Inspection / Test Operation button 4 times. Normal Test operation mode 2. When you press the [ON / OFF] button after setting the test run mode, the test run starts. 1.
Emergency Operation 154 ESIE12-06 Field Setting
ESIE12-06 Part 7 Service Diagnosis 1. Maintenance Inspection ...................................................................... 1.1 Overview .............................................................................................. 2. Symptom-based Troubleshooting ....................................................... 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 Overview ..............................................................................................
ESIE12-06 4.26 Transmission System Abnormality (between Control and Inverter PCB)........................................................................................220 4.27 Open Phase or Power Supply Voltage Imbalance ...............................222 4.28 Defective Capacity Setting ...................................................................223 4.29 Refrigerant Shortage (Alert) .................................................................224 4.30 Refrigerant Shortage (Error)..............
ESIE12-06 Maintenance Inspection 1. Maintenance Inspection 1.
Maintenance Inspection ESIE12-06 Correlation of Air-Conditioner’s Operation Status and Pressure / Running Current What happens in comparison to normal values is summarized in the table below. (Measured for 15 ~ 20 minutes or more after operation starts.
ESIE12-06 Symptom-based Troubleshooting 2. Symptom-based Troubleshooting 2.1 Overview 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Service Diagnosis Symptom Equipment does not operate. Indoor fan operates, but compressor does not operate. Cooling/heating operation starts but stops immediately. After unit shuts down, it cannot be restarted for a while. Equipment operates but does not provide cooling. Equipment operates but does not provide heating. Equipment discharges white mist.
Symptom-based Troubleshooting 2.
ESIE12-06 Symptom-based Troubleshooting Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the power switch OFF or fuse for power switch blown? YES NO Is there power failure? YES Turn ON the power switch or replace the fuse. If high-harmonics circuit breaker is not used on the inverter compressor, replace the circuit breaker. Wait until power returns.
Symptom-based Troubleshooting 2.
ESIE12-06 Symptom-based Troubleshooting Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. · Indoor unit fan runs at set airflow rate.
Symptom-based Troubleshooting 2.4 ESIE12-06 Cooling / Heating Operation Starts but Stops Immediately Applicable Model All models of SkyAir series Supposed Causes Overcharge of refrigerant Air mixed in refrigerant system Defective pressure switch Defective magnetic switch for outdoor unit fan motor Defective aux. relay for outdoor unit fan motor Soiled heat exchanger of outdoor unit There is an interfering item in airflow of outdoor unit.
ESIE12-06 2.
Symptom-based Troubleshooting ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn the operation switch ON and OFF, then wait at ON side. Does the unit start operation after 3 minutes? YES Normal. Unit is in 3-min standby mode. NO Is the discharge side of compressor hot after unit stop? NO Not so hot Check the compressor.
ESIE12-06 2.
Symptom-based Troubleshooting ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Measure the temperature of suction air and discharge air. Temperature difference = Suction air temp. – Discharge air temp. Temperature difference for cooling should be between 8 and 18˚C. YES YES Normal.
ESIE12-06 2.7 Symptom-based Troubleshooting Equipment Operates but does not Provide Heating Applicable Model All models of SkyAir series Supposed Causes Service Diagnosis Overcharge of refrigerant Air mixed in refrigerant system Defective pressure switch Defective magnetic switch for outdoor unit fan motor Defective aux. relay for outdoor unit fan motor Soiled heat exchanger of outdoor unit There is an interfering item in airflow of outdoor unit.
Symptom-based Troubleshooting ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is this first starting after installation? YES This is normal. Heating operation will be conducted after 2 or 3 minutes (∗). NO Is the unit in defrost mode? YES Wait for a while. No abnormality NO Measure the temperature of suction air and discharge air. Temperature difference = Suction air temp. – Discharge air temp.
ESIE12-06 2.8 Symptom-based Troubleshooting Equipment Discharges White Mist Applicable Model All models of SkyAir series Supposed Causes Humid installation site Installation site is dirty and with dense oil mists. Soiled heat exchanger Clogged air filter Defective fan motor Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Symptom-based Troubleshooting 2.9 ESIE12-06 Equipment Produces Loud Noise or Vibration Applicable Model All models of SkyAir series Supposed Causes Defective installation Overcharge of refrigerant Air mixed in refrigerant system Flushing noise due to refrigerant shortage. (Sound of shoo...) Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
ESIE12-06 Symptom-based Troubleshooting 2.10 Equipment Discharges Dust Applicable Model All models of SkyAir series Supposed Causes Carpet Animal hair Application (cloth shop,...) Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Does the trouble generate at the time of operation start again after extended period of operation? YES Dust collected inside the indoor unit are blown out.
Symptom-based Troubleshooting ESIE12-06 2.11 Remote Controller LCD Displays "88" Applicable Model All models of SkyAir series Supposed Causes Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Trouble generates just after power supply ON. YES NO Is the position of SS 1 on indoor unit PCB at "Emergency"? YES The unit is checking to confirm that remote controller is normal. Indication appears for short time.
ESIE12-06 Symptom-based Troubleshooting 2.12 Swing Flap does not Operate Applicable Models All models of SkyAir series Method of Error Detection Visual check Error Decision Conditions When ON/OFF of the micro-switch for positioning cannot be reversed even through the swing flap motor for a specified amount of time (about 30 seconds). Remark Some functions can force the swing flap into a fixed position, although swing mode is selected on the remote controller.
Symptom-based Troubleshooting ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Are the connectors (∗) correctly connected? NO Connect correctly. YES Is the limit switch’s transfer connector correctly connected? NO Connect correctly. YES Turn the power supply off once and back on, and check whether the swing flap motor swings when the power supply is turned back on.
ESIE12-06 Troubleshooting by LED Indications 3. Troubleshooting by LED Indications 3.1 Troubleshooting by LED on the Indoor Unit Foreword Troubleshooting can be carried out by service monitor LED (green).
Troubleshooting by Remote Controller ESIE12-06 4. Troubleshooting by Remote Controller 4.1 Procedure of Self-diagnosis by Remote Controller 4.1.1 Wired Remote Controller — BRC1D528 If operation stops due to error, the remote controller’s operation LED blinks, and error code is displayed. (Even if stop operation is carried out, error contents are displayed when the inspection mode is entered.) The error code enables you to tell what kind of error caused operation to stop. Refer to P.
ESIE12-06 Troubleshooting by Remote Controller 4.1.2 Wired Remote Controller — BRC1E51/52A7 The following will be displayed on the screen when a malfunction (or a warning) occurs during operation. Check the malfunction code and take the corrective action specified for the particular model. Screen Operation lamp (1) Checking a malfunction or warning Operation Status Display The operation lamp (green) starts to blink.
Troubleshooting by Remote Controller ESIE12-06 4.1.3 Wireless Remote Controller If unit stops due to an error, the operation indicating LED on the signal receiving part of indoor unit flashes. The error code can be determined by following the procedure described below. (The error code is displayed when an operation error has occurred. In normal condition, the error code of the last problem is displayed.) 1 2 3 4 Press the INSPECTION/TEST button to select “inspection”.
ESIE12-06 Troubleshooting by Remote Controller Normal status Enters inspection mode from normal status when the INSPECTION/ TEST button is pressed. 1 Press INSPECTION/TEST button. If no button is pressed for 1 minute, equipment returns to normal status. 3 Press MODE selector button. When MODE selector button is pressed or no button is pressed for 1 minute, equipment returns to normal status. If no button is pressed for 1 minute, equipment returns to normal status. 5 Press MODE selector button.
Troubleshooting by Remote Controller 4.
ESIE12-06 4.3 Troubleshooting by Remote Controller Safety Devices 4.3.1 Outdoor Unit Model RZQG71L High pressure switch Open Close 4.0 MPa +0/– 0.15 3.0 MPa ± 0.15 Fuse 6.3A/250V (F1U), 3.15A/250V (F6U) RZQG100L 6.3A/250V (F1U, F2U, F3U), RZQG125L 5A/250V (F6U) RZQG160L 4.3.2 Indoor Unit Model FCQG FHQG Service Diagnosis Thermal protector Abnormal Reset (automatic) — — Fuse N.A. 3.
Troubleshooting by Remote Controller 4.4 ESIE12-06 Indoor Unit PCB Abnormality A1 Remote Controller Display Applicable Models All models of indoor unit Method of Error Detection Check data from E2PROM. Error Decision Conditions The error is generated when the data from the E2PROM is not received correctly. E2PROM (Electrically Erasable Programmable Read Only Memory): A memory chip that holds its content without power.
ESIE12-06 4.5 Troubleshooting by Remote Controller Drain Water Level System Abnormality Remote Controller Display A3 Applicable Models All models of indoor unit Method of Error Detection By float switch OFF detection Error Decision Conditions The error is generated when the water level reaches its upper limit and when the float switch turns OFF.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the unit a cassette type? YES NO YES Is the optional drain pump kit installed? NO Is the short circuit connector connected to X15A on the indoor unit PCB? NO Connect the short circuit connector. YES Check the continuity of the short circuit connector. Is there continuity? NO Replace the short circuit connector.
ESIE12-06 4.6 Troubleshooting by Remote Controller Indoor Unit Fan Motor Abnormality A6 Remote Controller Display Applicable Models All models of indoor unit Method of Error Detection Detection of abnormal rotation speed of fan motor by signal from the fan motor Error Decision Conditions The error is generated when the rotation speed of the fan motor are not detected while the output voltage to the fan is at its maximum.
Troubleshooting by Remote Controller 4.7 ESIE12-06 Capacity Setting Abnormality AJ Remote Controller Display Applicable Models All models of indoor unit Method of Error Detection Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is determined.
ESIE12-06 4.8 Troubleshooting by Remote Controller Transmission Error (between Indoor Unit PCB and Adaptor PCB) Remote Controller Display C1 Applicable Models FCQG Method of Error Detection Check the condition of transmission between indoor unit PCB (A1P) and adaptor PCB (A2P) using micro-computer. Error Decision Conditions When normal transmission is not conducted for certain duration (15 seconds or more). After 60 seconds, error is display on the remote controller.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the connection of connector X70A on indoor unit PCB (A1P) normal? NO Connect the connector accurately. YES Is the connection of connector X7A on adaptor PCB (A2P) normal? NO Connect the connector accurately. YES Is the connector X8A on adaptor PCB (A2P) not short circuited? YES Short circuit X8A.
ESIE12-06 4.9 Troubleshooting by Remote Controller Thermistor Abnormality C4, C5, C9 Remote Controller Display Applicable Models All models of indoor unit Method of Error Detection The error is detected by temperature detected by thermistor. Error Decision Conditions When the thermistor becomes disconnected or shorted while the unit is running.
Troubleshooting by Remote Controller ESIE12-06 4.10 Humidity Sensor System Abnormality CC Remote Controller Display Applicable Models FCQG Method of Error Detection Even if error occurs, operation still continue. The error is detected by humidity (output voltage) detected by humidity sensor. Error Decision Conditions The error is generated when the humidity sensor becomes disconnected or shorted when the unit is running.
ESIE12-06 Troubleshooting by Remote Controller 4.11 Remote Controller Thermistor Abnormality CJ Remote Controller Display Applicable Models All models of indoor unit Method of Error Detection Even if remote controller thermistor is faulty, system is possible to operate by indoor unit suction air thermistor. The error is detected by temperature of remote controller thermistor.
Troubleshooting by Remote Controller ESIE12-06 4.12 Outdoor Unit PCB Abnormality E1 Remote Controller Display Applicable Models RZQG Method of Error Detection Micro-computer checks whether E2PROM is normal. Error Decision Conditions When E2PROM error when turning the power supply ON Supposed Causes Defective outdoor unit PCB (A1P) Defective fan motor External factor (Noise, etc.
ESIE12-06 Troubleshooting by Remote Controller 4.13 High Pressure Abnormality (Detected by the High Pressure Switch) 4.13.1 RZQG71, 100 E3 Remote Controller Display Applicable Models RZQG71, 100 Method of Error Detection [In cooling] The error is detected by the outdoor unit intermediate heat exchanger thermistor (R5T). [In heating] The error is detected by the indoor unit intermediate heat exchanger thermistor (R3T).
Troubleshooting by Remote Controller ESIE12-06 A Are the operation of electronic expansion valve normal? NO Troubleshooting "E9" YES CHECK 2 High pressure is too high. YES NO CHECK 9 Replace the outdoor unit PCB (A2P) If error is displayed again, replace the inverter PCB (A1P). [In heating] Are the characteristics of the indoor unit intermediate thermistor normal? NO Replace the indoor unit intermediate heat exchanger thermistor. YES The indoor unit fan is rotating during operation.
ESIE12-06 Troubleshooting by Remote Controller 4.13.2 RZQG125, 140 Remote Controller Display E3 Applicable Models RZQG125, 140 Method of Error Detection [In cooling] Detect the continuity of high pressure switch (S1PH) with the protection device circuit. The error is detected by the outdoor unit intermediate heat exchanger thermistor (R5T). [In heating] Detect the continuity of high pressure switch (S1PH) with the protection device circuit.
Troubleshooting by Remote Controller ESIE12-06 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 Are the connection of the connector on PCB and the connection to the switch unit normal? NO Correctly connect. YES After turning OFF the power and stopping the compressor for 10 minutes, check the items below.
ESIE12-06 Troubleshooting by Remote Controller 4.14 Actuation of Pressure Sensor Remote Controller Display E4 Applicable Models RZQG Method of Error Detection [In cooling] Detect error by the indoor unit intermediate thermistor (R3T). [In heating] Detect error by the intermediate heat exchanger thermistor (R5T). Error Decision Conditions [In cooling] When the detection pressure is the following value 0.
Troubleshooting by Remote Controller ESIE12-06 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.
ESIE12-06 Troubleshooting by Remote Controller 4.15 Compressor Motor Lock E5 Remote Controller Display Applicable Models RZQG Method of Error Detection Detect the motor lock when the compressor is energized. Error Decision Conditions If the motor rotor does not rotate when the compressor is energized. Supposed Causes Compressor lock High differential pressure (2.
Troubleshooting by Remote Controller ESIE12-06 4.16 Outdoor Unit Fan Motor Abnormality E7 Remote Controller Display Applicable Models RZQG Method of Error Detection Abnormality of fan motor system is detected according to the fan speed detected by hall IC when the fan motor runs.
ESIE12-06 Troubleshooting by Remote Controller A Is there any foreign matter around the fan? YES Remove the foreign matter. NO Remove the fan motor connector. Is the fan rotatable easily by hand? NO Replace the fan motor. YES CHECK 6 Check the resistance value for the fan motor. Is the resistance value of the fan motor normal? NO Replace the fan motor. YES Does the fuse (F6U) have continuity? NO Replace the fuse. YES Properly plug the fan motor connector and then turn the power ON again.
Troubleshooting by Remote Controller ESIE12-06 4.17 Electronic Expansion Valve Abnormality Remote Controller Display E9 Applicable Models RZQG Method of Error Detection The error is detected whether the continuity of electronic expansion valve exist or not. The error is detected by the suction pipe superheat degree, discharge pipe superheat degree and electronic expansion valve opening degree. Error Decision Conditions No common power supply when the power is ON.
ESIE12-06 Troubleshooting by Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn OFF the power supply and turn the power ON again. NO Error is displayed again? YES Is the electronic expansion valve connector properly connected to the outdoor unit PCB? (∗1) NO Connect properly.
Troubleshooting by Remote Controller ESIE12-06 A Are the characteristics of each thermistor normal? CHECK 1 NO Replace the defective thermistor. YES Are the pressure sensor characteristics normal? CHECK 5 NO Replace the pressure sensor. YES Actually, it is in wet operation. Refer to CHECK 8 to eliminate the causes of wet operation. Restart operation. Error is displayed again? YES Replace the outdoor unit PCB (A1P). NO External factor (Noise, etc.) CHECK 1 Refer to P.241. CHECK 5 Refer to P.
ESIE12-06 Troubleshooting by Remote Controller 4.18 Discharge Pipe Temperature Control Remote Controller Display F3 Applicable Models RZQG Method of Error Detection The error is detected according to the temperature detected by the discharge pipe temperature sensor.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the discharge pipe temperature above the criteria? ( ∗1) YES Abnormality in refrigerant system such as refrigerant shortage, faulty compressor, etc. Conduct inspection NO Is the discharge pipe thermistor correctly connected to outdoor unit PCB (A1P)? NO Connect correctly.
ESIE12-06 Troubleshooting by Remote Controller 4.19 High Pressure Switch System Abnormality H3 Remote Controller Display Applicable Models RZQG125, 140 Method of Error Detection The protection device circuit checks continuity in the high pressure switch (S1PH). Error Decision Conditions When there is no continuity in the high pressure switch during compressor stops operating.
Troubleshooting by Remote Controller ESIE12-06 4.20 Thermistor System Abnormality H9, J3, J5, J6, J7, J8 Remote Controller Display Applicable Models RZQG Method of Error Detection The error is detected according to the temperature detected by each individual thermistor.
ESIE12-06 Troubleshooting by Remote Controller 4.21 Outdoor Unit PCB Abnormality Remote Controller Display L1 Applicable Models RZQG Method of Error Detection Detect error by current value during waveform output before compressor startup. Detect error by current sensor value during synchronized operation at the time of startup. Detect error using an MP-PAM series capacitor overvoltage sensor.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the power supply voltage between 180 and 220 VAC? NO YES Request an improvement to make the power supply voltage fall within the standard range. Turn OFF the power supply, and remove the connector for fan motor, and then operate again. "L1" is displayed? NO Replace the fan motor.
ESIE12-06 Troubleshooting by Remote Controller 4.22 Radiation Fin Temperature Rise Remote Controller Display L4 Applicable Models RZQG Method of Error Detection Radiation fin temperature is detected by the radiation fin thermistor. Error Decision Conditions When the temperature of the inverter radiation fin rises abnormally due to faulty heat dissipation.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Can it be considered that the radiation fin temperature was high? (∗1) YES Eliminate the cause. NO Is the connector of the radiation fin thermistor correctly connected to the outdoor unit PCB? (∗1) NO Connect correctly. YES Turn the power ON, and then press the remote controller check button once.
ESIE12-06 Troubleshooting by Remote Controller 4.23 Output Overcurrent Detection L5 Remote Controller Display Applicable Models RZQG Method of Error Detection The error is detected by converting the current flowing to power transistor into voltage with CT1 (DC current sensor). Error Decision Conditions When overcurrent has run to power transistor.
Troubleshooting by Remote Controller ESIE12-06 A CHECK 4 Continuity check in the power transistor (IGBT). Is the continuity normal? NO Replace the outdoor unit PCB. YES Turn the power ON, and then operate the test operation. Error is displayed again? NO YES Continue the operation normally. YES NO Go to the other troubleshooting. Normal operation. Check the power supply voltage. Is instantaneous voltage drop generated? YES Correct the power supply. NO Compressor inspection.
ESIE12-06 Troubleshooting by Remote Controller 4.24 Electronic Thermal (Time Lag) Remote Controller Display L8 Applicable Models RZQG Method of Error Detection The error is detected from the current flowing to power transistor into voltage with CT1 (DC current sensor). Error Decision Conditions When compressor overload (except for when startup) is detected.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the secondary current of the inverter higher than A (∗1) for each phase? YES Is the stop valve opened? NO NO Open the stop valve. YES CHECK 2 High pressure is high. Turn OFF the power supply. YES NO Remedy the cause. Check for excessive refrigerant charging. CHECK 9 Replace the outdoor unit PCB (A1P).
ESIE12-06 Troubleshooting by Remote Controller 4.25 Stall Prevention (Time Lag) Remote Controller Display L9 Applicable Models RZQG Method of Error Detection The error is detected by converting the current flowing to power transistor into voltage with CT1 (DC current sensor). Inverter PCB detects the disorder of position signal. Error Decision Conditions When compressor overload and change of load are detected when startup Supposed Causes Service Diagnosis Stop valve is not opened.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the installation conditions. Is the stop valve open? NO Open the stop valve. YES Is the difference between high and low pressure before startup not more than 0.2MPa? NO Insufficient pressure equalization. Check refrigerant system.
ESIE12-06 Troubleshooting by Remote Controller 4.26 Transmission System Abnormality (between Control and Inverter PCB) LC Remote Controller Display Applicable Models RZQG Method of Error Detection Check whether transmission between control and inverter PCB is carried out normally.
Troubleshooting by Remote Controller ESIE12-06 4.27 Open Phase or Power Supply Voltage Imbalance P1 Remote Controller Display Applicable Models RZQG Method of Error Detection The error is detected according to the voltage waveform of main circuit capacitor built in inverter. Error Decision Conditions When the aforementioned voltage waveform becomes identical with the waveform of the power supply open phase.
ESIE12-06 Troubleshooting by Remote Controller 4.28 Defective Capacity Setting PJ Remote Controller Display Applicable Models RZQG Method of Error Detection Check whether set value written in E2PROM (at factory) or set value of capacity setting adaptor (for spare) is the same as outdoor unit capacity. Error Decision Conditions When the set value on E2PROM differs from the outdoor unit capacity or a capacity setting adaptor except for PCB applicable models is installed.
Troubleshooting by Remote Controller ESIE12-06 4.29 Refrigerant Shortage (Alert) U0 Remote Controller Display Applicable Models RZQG Method of Error Detection Refrigerant shortage is detected according to the electronic expansion valve opening degree and measured temperatures and pressures. Error Decision Conditions (In cooling operation) When the electronic expansion valve opens fully and low pressure is below 0.25 MPa continuously for 30 seconds.
ESIE12-06 Troubleshooting by Remote Controller 4.30 Refrigerant Shortage (Error) Remote Controller Display U0 Applicable Models RZQG Method of Error Detection (In cooling) Detection based on difference in temperature between temperature set by remote controller and indoor suction air temperature, electronic expansion valve opening degree, compressor frequency and low pressure.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. CHECK 10 Check for refrigerant shortage. Is the refrigerant amount proper? NO Collect refrigerant and recharge a proper amount of refrigerant after vacuum drying. YES Check the inter-unit wiring and piping between the indoor and outdoor units. Is wiring and piping connection matched? NO Match wiring and piping connection.
ESIE12-06 Troubleshooting by Remote Controller 4.31 Power Supply Voltage Abnormality Remote Controller Display U2 Applicable Models RZQG Method of Error Detection The error is detected according to the voltage of main circuit capacitor built in the inverter and power supply voltage. Error Decision Conditions When the voltage of main circuit capacitor built in the inverter and power supply voltage drop or when the power failure of several tens of ms or more is generated.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the power supply voltage between 200±10% VAC? NO Field factors YES Remove the connector for fan motor on the PCB, and operate. NO "U2" is displayed? YES Is the fan motor normal? (Refer to troubleshooting "E7" ) NO Replace the fan motor.
ESIE12-06 Troubleshooting by Remote Controller 4.32 Transmission Error between Indoor and Outdoor Unit Remote Controller Display U4 Applicable Models RZQG Method of Error Detection The error is generated when the micro-processor detects that the transmission between the indoor and the outdoor unit is not normal over a certain amount of time. Error Decision Conditions When the transmission is not carried out normally over a certain amount of time.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the power supply voltage between 180 and 220 VAC? NO Field factor YES Continue the condition that the blinking interval of HAP on outdoor unit PCB is short (∗1) for more than one minute. YES (The phases of connecting lines of indoor and outdoor unit do not fit each other.
ESIE12-06 Troubleshooting by Remote Controller A YES Check the resistance value of the outdoor fan motor. Is the resistance value of the outdoor fan motor normal? NO Replace the outdoor fan motor. YES Does the fuse (F6U) have continuity? NO Make the fuse normal. • In case of a fuse can be replaced, replace the fuse. • In case of a fuse cannot be replaced, replace PCB. YES After turning OFF the power supply, correctly insert the connector of the fan motor and then restore the power.
Troubleshooting by Remote Controller ESIE12-06 4.33 Transmission Error Between Remote Controller and Indoor Unit U5 Remote Controller Display Applicable Models All models of indoor unit Method of Error Detection The error is generated when the micro-computer detects that the transmission between the indoor and the outdoor unit is not normal over a certain amount of time. Error Decision Conditions Normal transmission does not continue for specified period.
ESIE12-06 Troubleshooting by Remote Controller 4.34 Transmission Error between MAIN Remote Controller and SUB Remote Controller U8 Remote Controller Display Applicable Models All models of indoor units Method of Error Detection In case of controlling with 2- remote controller, check the system using micro-computer if signal transmission between indoor unit and remote controller (main and sub) is normal.
Troubleshooting by Remote Controller ESIE12-06 4.
ESIE12-06 Troubleshooting by Remote Controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Are the remote controllers connected to several indoor units? YES Adopt only one of the remote controllers. NO Is the remote controller wiring jumped between indoor units? YES Remove the jumper. (Group control in the same system is not allowed.) NO Is the field setting for pair system correct? NO Set correctly.
Troubleshooting by Remote Controller ESIE12-06 4.36 “UC” Address Duplication of Centralized Controller UC Remote Controller Display Applicable Models All models of indoor unit Centralized controller Method of Error Detection The principal indoor unit detects the same address as that of its own on any other indoor unit. Error Decision Conditions The error decision is made as soon as the abnormality aforementioned is detected.
ESIE12-06 Troubleshooting by Remote Controller 4.37 Transmission Error Between Centralized Controller and Indoor Unit Remote Controller Display UE Applicable Models All models of indoor units Centralized controller Schedule timer Method of Error Detection Micro-computer checks if transmission between indoor unit and centralized controller is normal.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Are there any breaking and wrong wiring of the connecting wires? NO Make the wiring correct. YES Is the onceconnected indoor unit equipment disconnected or the address changed? YES Reset the all remote controllers power supply at the same time.
ESIE12-06 Troubleshooting by Remote Controller 4.38 Transmission Error between Indoor and Outdoor Unit / Piping and Wiring Mismatch / Refrigerant Shortage Remote Controller Display UF Applicable Models RZQG Method of Error Detection Check the transmission between the indoor and outdoor units with a micro-computer when the power turned ON. Detect by checking the following temperature differences during compressor operation.
Troubleshooting by Remote Controller ESIE12-06 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Does "UF" appear when the power is turned ON? YES The phase of inter-unit wiring between the indoor and outdoor units is incorrect. NO Continue the condition that the blinking interval of HAP on outdoor unit PCB is short (∗1) for more than one minute.
ESIE12-06 4.39 Check CHECK 1 Check the Thermistors Thermistors If the cause of the problem is related to the thermistors, then the thermistors should be checked prior to changing the PCB. For more information about these thermistors, see: “Wiring Diagrams’’ on P.257 “Functions of Main Components and Thermistors” on P.
ESIE12-06 Thermistor Resistance / Temperature Characteristics Indoor unit Outdoor unit 242 FCQG, FHQG R1T R2T R3T Thermistor Suction air thermistor Heat exchanger thermistor Intermediate heat exchanger thermistor RZQG R1T R3T R4T R5T R6T R10T Thermistor Outdoor air thermistor Suction pipe thermistor Heat exchanger distributor pipe Intermediate heat exchanger thermistor Liquid pipe thermistor Radiation fin thermistor TºC -10 -8 -6 -4 -2 k 88.0 79.1 71.1 0 2 4 6 8 64.1 57.8 52.3 47.3 42.
ESIE12-06 Outdoor unit RZQG R2T Thermistor Discharge pipe thermistor T°C k T°C k T°C k T°C k T°C k T°C k 0 640.44 0.5 624.65 50 72.32 50.5 70.96 100 13.35 100.5 13.15 1 609.31 1.5 594.43 51 69.64 51.5 68.34 101 12.95 101.5 12.76 2 579.96 2.5 565.78 52 67.06 52.5 65.82 102 12.57 102.5 12.38 3 552.00 3.5 538.63 53 64.60 53.5 63.41 103 12.20 103.5 12.01 4 525.63 4.5 512.97 54 62.24 54.5 61.09 104 11.84 104.5 11.66 5 500.66 5.
ESIE12-06 CHECK 2 Evaluation of Abnormal High Pressure Abnormally high pressure level is mostly caused by the condenser side. The following contents are provided by service engineer based on their field checks. Further, the number is listed in the order of degree of influence.
ESIE12-06 CHECK 3 Evaluation of Abnormal Low Pressure Abnormally low pressure level is mostly caused by the evaporator side. The following contents are provided based on field checking of service engineer. Further, the number is listed in the order of degree of influence.
ESIE12-06 CHECK 4 Check for Power Transistor Judgement according to the continuity check by using an analog tester: (1) Do not touch the charged area (high voltage) for 10 minutes after turning the power supply off. (2) If you must touch such an area, make sure that the power supply voltage of power transistor is 50 V or less. (3) Disconnect the connector of the outdoor unit fan motor. When the outdoor unit fan is rotating against a strong wind, the condenser is charged and electric shock may result.
ESIE12-06 CHECK 5 Check Pressure Sensor Measure the voltage (DC) between pins 1 and 3 of the connector. Outdoor unit PCB (A1P) +5V Red Black GND White Micr-ocomputer A/D input Pressure sensor Connector Red Measure DC voltage here. Detected Pressure PH (Kg/cm²) MPa 51.0 5.0 45.9 4.5 40.8 4.0 35.7 3.5 30.6 3.0 PH 25.5 2.5 20.4 2.0 15.3 1.5 10.2 1.0 5.1 0.5 0 0 -5.1 -0.5 -0.5 PH = 1.38VH – 0.69 PH : Detected pressure (MPa) VH : Output voltage (V) 0 0.5 1 1.5 2 2.5 Output voltage (VH) 3 3.
ESIE12-06 CHECK 6 Fan Motor Signal Line (1) Turn the power supply off. (2) With the fan motor connector disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table.
ESIE12-06 CHECK 8 Check for Factors Causing Wet Operation Referring to the Fault Tree Analysis (FTA) shown below, identify the faulty points. Refrigerant dwelling Faulty crankcase heater Frequent starts and stops of the compressor ← Refer to CHECK 9 .
ESIE12-06 CHECK 9 Check for Excessive Refrigerant Charging As criteria for judging whether refrigerant is excessively charged or not, refer to the following operating conditions. In cooling operation (1) Because high pressure rises due to excessive charging, overload control is carried out and capacity tends to run short. (2) Considering pressure load, compressor discharge pipe temperature is low. (3) Subcooled degree of condensate liquid becomes large.
ESIE12-06 CHECK 10 Clogged Points Temperature differences must occur before or after the clogged points! 1 3 3 4 5 2 ACC Indoor Unit COMP Outdoor Unit Check points Check factor Causes Remedies 1 Around expansion mechanism Temperature difference Dust Choked moisture Reduced effective pipe diameter due to adherent contamination, etc. Replace the electronic expansion valve. 2 Accumulator Frosting Choked moisture Blow a nitrogen gas, and then replace the refrigerant.
ESIE12-06 CHECK 11 Check for Inadequate Refrigerant As criteria for judging whether refrigerant is inadequate or not, refer to the following operating conditions. In cooling operation (1) As suction superheat degree increases due to refrigerant shortage, the electronic expansion valve tends to open (opens fully) in order to avoid overheat operation.
ESIE12-06 In heating operation (1) As suction superheat degree increases due to refrigerant shortage, the electronic expansion valve tends to open (opens fully) to avoid overheat operation. (2) As suction superheat degree increases due to refrigerant shortage, compressor frequency decreases because suction superheat degree is controlled in order to prevent oil to the outdoor heat exchanger from being retained.
ESIE12-06 254 Service Diagnosis
ESIE12-06 Part 8 Appendix 1. Piping Diagrams..................................................................................256 1.1 RZQG71L .............................................................................................256 1.2 RZQG100-140L....................................................................................256 2. Wiring Diagrams..................................................................................257 2.1 Indoor Unit................................................
Piping Diagrams ESIE12-06 1. Piping Diagrams 1.1 RZQG71L Electronic expansion valve Filter Filter Outdoor heat exchanger 4 way valve Check valve Indoor heat exchanger Pressure switch (high) HPS Field piping φ9.5 C1220T-O Field piping φ15.9 C1220T-O Indoor unit Service port (5/16" flare) Compressor Accumulator Accumulator Compressor Outdoor unit Stop valve (with service port 5/16" flare) 3D069535 1.
ESIE12-06 Wiring Diagrams 2. Wiring Diagrams 2.1 Indoor Unit 2.1.
Wiring Diagrams 2.2 ESIE12-06 Outdoor Unit 2.2.1 RZQG71L TO INDOOR UNIT POWER SUPPLY ~220-240V 50Hz X1M L N N L X1M 1 2 3 BLK WHT RED BLU RED LA NA GRN E Z1F Z 2 F F1U RC HAP H1P H3P H5P H7P DS1 ON NOTE)3 OFF BS1 BS2 BS3 BS4 A1P 12 (BACK) X205A X1M F6U H1P~H7P (FRONT) EL.COMPO.
ESIE12-06 Precautions for New Refrigerant (R-410A) 3. Precautions for New Refrigerant (R-410A) 3.1 Outline 3.1.1 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.
Precautions for New Refrigerant (R-410A) ESIE12-06 Thermodynamic characteristic of R-410A Temperature (˚C) 260 Steam pressure (kPa) Liquid Vapor Density (kg/m3 ) Liquid Vapor Specific heat at constant pressure (kJ/kgK) Liquid Vapor Specific enthalpy (kJ/kg) Liquid Vapor DAIREP ver2.
ESIE12-06 3.2 Precautions for New Refrigerant (R-410A) Refrigerant Cylinders Cylinder specifications • The cylinder is painted refrigerant color (pink). • 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.
Precautions for New Refrigerant (R-410A) 3.3 ESIE12-06 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.
ESIE12-06 Precautions for New Refrigerant (R-410A) 1. Flaring tool Flare gauge Specifications • 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 • 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.
Precautions for New Refrigerant (R-410A) ESIE12-06 2. Torque wrench Specifications • Dimension B Nominal size 1/2 5/8 Unit:mm Class-1 24 27 Class-2 26 29 Previous 24 27 No change in tightening torque No change in pipes of other sizes Differences • Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B 3.
ESIE12-06 Precautions for New Refrigerant (R-410A) 4. Leak tester Specifications • Hydrogen detecting type, etc. • Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. Differences • Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5. Refrigerant oil (Air compal) Specifications • Contains synthetic oil, therefore it can be used for piping work of every refrigerant cycle.
Precautions for New Refrigerant (R-410A) • ESIE12-06 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences • Change in pressure • Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) • • • 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.
ESIE12-06 Precautions for New Refrigerant (R-410A) 9. Weigher for refrigerant charge Specifications • High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g • Equipped with pressure-resistant sight glass to check liquid refrigerant charging. • A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories. Differences • Measurement is based on weight to prevent change of mixing ratio during charging. 10.
Precautions for New Refrigerant (R-410A) 268 ESIE12-06 Appendix
