Service manual

ManualsBrandsMitsubishi ManualsAir ConditionerPFFY-NEMU-A

TECHNICAL & SERVICE MANUAL

Air-Conditioners For Building Application

2005

Models

PFFY-P06NRMU-E,PFFY-P08NRMU-E

PFFY-P12NRMU-E,PFFY-P15NRMU-E

PFFY-P18NRMU-E,PFFY-P24NRMU-E

PFFY-P06NEMU-E,PFFY-P08NEMU-E

PFFY-P12NEMU-E,PFFY-P15NEMU-E

PFFY-P18NEMU-E,PFFY-P24NEMU-E

CONTENTS

SAFETY PRECAUTIONS ·························1

1. FEATURES ···········································3

2. PART NAMES AND FUNCTIONS ········4

3. SPECIFICATION ···································6

4. OUTLINES AND DIMENSIONS············8

5. WIRING DIAGRAM ·····························10

REFRIGERANT SYSTEM DIAGRAM

····11

7. TROUBLE SHOOTING·······················12

8. DISASSEMBLY PROCEDURE···········

Floor Standing Type

Series PFFY

For use with the R410A & R22

Exposed type

Concealed type

Summary of content (25 pages)

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2005 Air-Conditioners For Building Application TECHNICAL & SERVICE MANUAL Series PFFY Floor Standing Type Models PFFY-P06NRMU-E,PFFY-P08NRMU-E PFFY-P12NRMU-E,PFFY-P15NRMU-E PFFY-P18NRMU-E,PFFY-P24NRMU-E PFFY-P06NEMU-E,PFFY-P08NEMU-E PFFY-P12NEMU-E,PFFY-P15NEMU-E PFFY-P18NEMU-E,PFFY-P24NEMU-E CONTENTS SAFETY PRECAUTIONS ·························1 1. FEATURES ···········································3 2. PART NAMES AND FUNCTIONS ········4 3.
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SAFETY PRECAUTIONS 1. Before installation and electric work s Before installing the unit, make sure you read all the “Safety precautions”. s The “Safety precautions” provide very important points regarding safety. Make sure you follow them. • • • s This equipment may cause the adverse effect on the same supply system. s Please report to or take consent by the supply authority before connection to the system.
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2. Warning: • Note the following when building a heater in the air conditioning system. - Leave enough space between units for proper ventilation so that the indoor unit temperature does not exceed 40˚C when windless. - Keep the heater clean, and take appropriate measures so that the indoor unit does not suck in the dust particles that accumulate on the heater. - Use the optional heater cable (PAC-YU24HT) to perform an interlocked operation with indoor units.
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1 FEATURES Series PFFY Floor Standing Type Exposed type Models PFFY-P06NEMU-E,PFFY-P06NRMU-E PFFY-P08NEMU-E,PFFY-P08NRMU-E PFFY-P12NEMU-E,PFFY-P12NRMU-E PFFY-P15NEMU-E,PFFY-P15NRMU-E PFFY-P18NEMU-E,PFFY-P18NRMU-E PFFY-P24NEMU-E,PFFY-P24NRMU-E 3 Concealed type Cooling capacity/Heating capacity kW BTU / h 1.8 / 2.0 2.3 / 2.6 3.5 / 4.0 4.4 / 5.0 5.3 / 5.9 7.0 / 7.
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2 PART NAMES AND FUNCTIONS ● Indoor (Main) Unit Air outlet Air outlet Air inlet Air inlet Exposed type ● Remote controller Concealed type [PAR-21MAA] ● Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. [Operation buttons] 1 TEMP.
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[Display] A CENTRALLY CONTROLLED E ON C STAND BY DEFROST C 5 ERROR CODE NOT AVAILABLE TEMP. G A B C D E F G H I J K L M N O P 1Hr. OFF CLOCK CHECK B P Current time/Timer Centralized control Timer OFF Timer indicator Operation mode: COOL, DRY, “Locked” indicator Set temperature Power ON Louver Ventilation Filter sign Set effective for 1 hr.
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3 SPECIFICATION 3-1. Specification PFFY-P-NEMU-E Model Item Power sourse Capacity *1 Cooling Heating Height Dimension Width Depth Net weight FAN Airflow rate (Low-High) External static pressure Noise level (Low-High) *2 Filter kW BTU/h kW BTU/h mm in mm in mm in kg lb m3/min cfm 208V Pa 230V 208V dB(A) 230V PFFYP06NEMU-E PFFYP08NEMU-E 1.8 6000 2.0 6700 2.3 8000 2.6 9000 1050 41-11/32 23 51 5.5-6.5 194-229 36-41 36-41 23 51 5.5-6.5 194-229 36-41 36-41 PFFYP06NRMU-E PFFYP08NRMU-E 1.
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3-2. Electrical parts specification Model Parts name Symbol PFFY-P06 NEMU-E NRMU-E PFFY-P08 NEMU-E NRMU-E PFFY-P12 NEMU-E NRMU-E (Primary) 60Hz 208-230V PFFY-P15 NEMU-E NRMU-E PFFY-P18 NEMU-E NRMU-E PFFY-P24 NEMU-E NRMU-E Tranrsformer T Room temperature thermistor TH21 Resistance 0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ, 30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.0kΩ Liquid pipe thermistor TH22 Resistance 0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.
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Gas pipe Liquid pipe 90(3-9/16) 6(1/4) 35(1-13/32) 2 35(1-7/16) mm(in.) 1 :R410A outdoor unit 2 :R22 outdoor unit 25(1) 10(7/16) Drain hose(accessory) OD ø27(1-1/8) (TOPø20(13/16)) Strainer Drain pan 1 Gas pipe 2 Liquid pipe C D ø6.35(1/4) 600(23-5/8) 610(24-1/16) ø12.7(1/2) ø6.35(1/4) ø12.7(1/2) 600(23-5/8) 610(24-1/16) 720(28-3/8) 730(28-3/4) ø6.35(1/4) ø12.7(1/2) 720(28-3/8) 730(28-3/4) ø6.35(1/4) ø12.7(1/2) 1 ø12.7(1/2) 1 ø6.
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50(1-31/32) Gas pipe 100(3-15/16) 2-ø4.
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SW5 7 8 6 5 4 9 0 1 2 3 7 8 6 5 4 9 0 1 2 3 (Red) TH21 31 21 TH22 TH23 (White) 31 21 (Black) LEV 654321 654321 654321 21 21 21 21 (White) CN60 (White) (Black) (White) CN21 CN29 CN31 (Red) CN20 LED2 (White) 3 T 1 (Red) CN3T NAME Fan motor Capacitor (for MF) Indoor controller board Address board Power source terminal bed Transmission terminal bed Transmission terminal bed Fuse AC250V 6.3A T Transformer Electronic linear expan. valve Surge absorber board Aux.
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6 REFRIGERANT SYSTEM DIAGRAM Gas pipe thermistor TH23 Gas pipe Liquid pipe thermistor TH22 Flare connection Heat exchanger Linear expansion valve Strainer (#100mesh) Strainer (#100mesh) Room temparature thermistor TH21 mm Capacity PEFY-P06,08,12,15NEMU-E PEFY-P06,08,12,15NRMU-E PEFY-P18NEMU-E PEFY-P18NRMU-E PEFY-P24NEMU-E PEFY-P24NRMU-E Item ø 12.7(1/2) R410A ø 15.88(5/8) Gas pipe R22 ø 12.7(1/2) ø 15.88(5/8) ø 6.35(1/4) R410A ø 15.88(5/8) ø 9.52(3/8) Liquid pipe R22 11 ø 6.
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7 TROUBLE SHOOTING 7-1. How to check the parts Parts name Check points Room temparature thermistor (TH21) Liquid pipe thermistor (TH22) Gas pipe thermistor (TH23) Disconnect the connector, then measure the resistance using a tester. (Surrounding temperature 10°C~30°C[50°F~86°F]) Transformer Disconnect the connector and measure the resistance using a tester. CNT 1 2 3 T Red White CN3T Blue 1 2 3 CNT(1)-(3) CN3T(1)-(3) Abnormal Open or short Normal App.15Ω App.
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Thermistor for lower temperature < Thermistor for lower temperature > Room temparature thermistor(TH21) Liquid pipe thermistor(TH22) Gas pipe temparature thermistor(TH23) Drain sensor(DS) 1 273+t 15kΩ 9.6kΩ 6.3kΩ 5.2kΩ 4.3kΩ 3.
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Output Output (Phase) 1 2 3 4 ø1 ON OFF OFF ON ø2 ON ON OFF OFF ø3 OFF ON ON OFF ø4 OFF OFF ON ON Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order. ✻ 1. When linear expansion valve operation stops, all output phase become OFF. 2. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will locks and vibrates.
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7-2. Setting of address switch Make sure that power source is turning off.
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7-3.
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8 DISASSEMBLY PROCEDURE 8-1 CONTROL BOX (Exposed type PFFY-NEMU) OPERATING PROCEDURE 1.Removing the front panel (A) (1)Remove the fixing screws(two) of the front panel(A).(Fig.1) Be careful removing heavy parts. PHOTOS Fig.1 (2)Hold the bottom of the front panel with your hands,and gently lift it. The front panel should fall down forward.(Fig.2) 2.Removing the control box cover (B) (1)Remove the fixing screws(two) of the cover(B) and remove the cover.(Fig.3) (A) Fig.2 (A) Fig.
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8-2 THERMISTOR (Gas and liquid piping temperature detection) Be careful removing heavy parts. OPERATING PROCEDURE 1.Removing the side casing (1)Open the control panel cover(A), remove the fixing screws(two) of the securing cover. (Fig. 1) PHOTOS (A) (B) (2)Pull up the side casing(B). (Fig. 2) Fig.1 (B) Fig.2 Fig.3 2.Removing the thermistor (1)Remove the fixing screws (three), remove the cover (C) and (D). (Fig. 3) (2)Remove the thermistor (gas)(E) and the thermistor (liquid)(F). (Fig. 4) (C) Fig.
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8-3 THERMISTOR (Intake air temperature detection) OPERATING PROCEDURE 1.Removing the thermistor (1)Remove the thermistor under the control box. Be careful removing heavy parts. PHOTOS Fig.1 Thermistor 8-4 DRAINPAN OPERATING PROCEDURE 1.Removing the drainpan (1)Remove the fixing screw of the side frame by the control box. (Fig. 1) PHOTOS Fig.1 (2)Slide the drainpan in the direction of the arrow ➀. Fig.
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8-5 FAN and FAN MOTOR Be careful removing heavy parts. OPERATING PROCEDURE 1.Sliding the fan section (Fig.1) (1)Remove the fixing screws(two) (a). (2)Slide the fan section in direction of the arrow ➀. PHOTOS Fig.1 2.Removing the fan motor (Fig.2) (1)Remove the fixing screws (two)(b) of the fan casing(A). (2)Remove the fan motor shaft fixing screw and remove the fan casing(A) and sirroco fan. (3)Remove the fixing screws(two) (c) of the motor fixtures (two) and remove the motor.
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8-6 HEAT EXCHANGER Be careful removing heavy parts. OPERATING PROCEDURE 1.Removing the casing (1)Remove the fixing screws(six) and remove the casing. (Fig. 1) PHOTOS Fig.1 2.Removing the cover1,2 with procedure 8-2 (Fig. 2) 3.Removing the Heat exchanger (1)Remove the fixing screws(four) and remove the heat exchanger support. (Fig. 3) (2)Remove the heat exchanger, moving from side to side. Fig.2 Cover 2 Cover 1 Fig.
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8-7 CASING (Concealed type PFFY-NRMU) Be careful removing heavy parts. OPERATING PROCEDURE 1.Removing the casing ass’y (1)Remove the fixing screws (nine) of the plate(A) and remove the plate. (Fig. 1) PHOTOS Fig.1 2.Removing the air diffuser ass’y (1)Remove the fixing screws (eight) of the air diffuser ass’y(B) and remove it. (Fig. 2) Note: Without this section, almost the disassembly procedures are same as Exposed type (PFFY-NEMU) and Concealed type (PFFY-NRMU). (A) Fig.2 (B) Fig.
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Issued in Aug. 2005 HWE05150 New publication, effective Aug.
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3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to change without notice.