Mitsubishi Electric PKFY-P32VHM-E Technical & Service Manual Download

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TECHNICAL & SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ......................... 2

2. SAFETY PRECAUTION .......................... 2

3. PART NAMES AND FUNCTIONS .......... 6

4. SPECIFICATION ..................................... 8

5. OUTLINES AND DIMENSIONS ............ 11

6. WIRING DIAGRAM ............................... 12

7. REFRIGERANT SYSTEM DIAGRAM ........13

8. TROUBLESHOOTING .......................... 13

9. DISASSEMBLY PROCEDURE ............. 21

Indoor unit
[Model names]

[Service Ref.]

PKFY-P32VHM-E

PKFY-P32VHM-ER1

PKFY-P40VHM-E

PKFY-P40VHM-ER1

PKFY-P50VHM-E

PKFY-P50VHM-ER1

No. OCH442

REVISED EDITION-A

INDOOR UNIT

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R407C

R22

R410A

Note:

•

This manual describes

only service data of the
indoor units.

•

RoHS compliant products

have <G> mark on the
spec name plate.

February 2009

PARTS CATALOG (OCB442)

Revision:

•

PKFY-P32/40/50VHM-ER1

are added in REVISED
EDITION-A.

•

Some descriptions have

been modified.

•

Plase void OCH442.

Summary of Contents for PKFY-P32VHM-E

Page 1: ...P32VHM E PKFY P32VHM E PKFY P32VHM ER1 PKFY P40VHM E PKFY P40VHM E PKFY P40VHM ER1 PKFY P50VHM E PKFY P50VHM E PKFY P50VHM ER1 No OCH442 REVISED EDITION A INDOOR UNIT SPLIT TYPE HEAT PUMP AIR CONDITIONERS R407C R22 R410A Note This manual describes only service data of the indoor units RoHS compliant products have G mark on the spec name plate February 2009 PARTS CATALOG OCB442 Revision PKFY P32 40...

Page 2: ...e cylinder will change and performance may drop Do not use a refrigerant other than R407C If another refrigerant R22 etc is used the chlorine in the refrigerant may cause the lubricant deterioration Use a vacuum pump with a reverse flow check valve The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant deterioration Store the piping to be used indoors during installat...

Page 3: ...lease the refrigerant in the air After completing the repair service recharge the cycle with the specified amount of liquid refrigerant Gravimeter Unit No Tool name Specifications Gauge manifold Only for R407C Use the existing fitting SPECIFICATIONS UNF7 16 Use high tension side pressure of 3 43MPa G or over Charge hose Only for R407C Use pressure performance of 5 10MPa G or over Electronic scale ...

Page 4: ...ith care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Flare tool Electronic refrigerant charging scale Vacuum pump adaptor Size adjustment gauge Gauge manifold Torque wren...

Page 5: ...with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase Gravimeter Unit 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant No Tool name Specifications 1 Gauge manifold Only for R410A Use the existing fitting specifications UNF1 2 Use high tension side pressure of 5 3MPa G or over 2 Charge hose Only for R410A Use pressure performance o...

Page 6: ...m temperature CLOCK display Displays the current time display Displays the order of timer operation display Displays whether timer is on or off In case the outdoor unit is cool only type the heating and auto mode are not available Buttons used to set the hour and minute of the current time and timer settings h and min buttons display display FAN SPEED display indicates which fan speed has been sel...

Page 7: ...oom temperature display range is 8 39 The display blinks if the temperature is less than 8 or 39 or more Louver display Indicates the action of the swing louver Does not appear if the louver is not running Power On indicator Indicates that the power is on Fan Speed indicator Shows the selected fan speed Ventilation indicator Appears when the unit is running in Ventilation mode Operation Section Te...

Page 8: ...Quantity External static press Motor type Motor output Driving mechanism Airflow rate Low Mid2 Mid1 High Liquid Gas Document Accessory Optional parts Installation kW kcal h Btu h kcal h kW A kW kcal h Btu h kW A mm in kg lb Pa mmH2O kW m3 min L s cfm dB A mm in mm in mm in 1 1 1 2 3 3 3 R410A R22 R407C R410A R22 R407C Installation Manual Instruction Book 1 phase 220 240V 50Hz 1 phase 220V 60Hz Cro...

Page 9: ... mechanism Airflow rate Low Mid High Liquid Gas Document Accessory Optional parts Installation kW kcal h Btu h kcal h kW A kW kcal h Btu h kW A mm in kg lb Pa mmH2O kW m3 min L s cfm dB A mm in mm in mm in 1 1 1 2 3 3 3 R410A R22 R407C R410A R22 R407C Installation Manual Instruction Book 1 phase 220 240V 50Hz 1 phase 220V 60Hz Cross fin Aluminum fin and copper tube DC motor Direct drive Polyethyle...

Page 10: ...el dB A Sound level at anechoic room Low Middle2 Middle1 High OCTAVE BAND PRESSURE LEVEL dB 0dB 20MPa 1 0m 1 0m Measurement location OCTAVE BAND PRESSURE LEVEL dB 0dB 20MPa PKFY P32VHM ER1 PKFY P40VHM ER1 PKFY P50VHM ER1 34 37 41 34 39 43 Sound level dB A Sound level at anechoic room Low Middle High Service Ref Service Ref 34 38 41 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 6...

Page 11: ...kout hole for lower piping C 8 B Size Refrigerant pipe 6 35 Flared connection 1 4F Refrigerant pipe 12 7 Flared connection 1 2F 16 O D Liquid pipe Gas pipe Drain hose Knockout hole for right piping Right side Mount board 21 8 0 20 32 7 53 5 66 128 5 153 5 231 5 273 2 449 281 193 5 180 3 278 3 167 140 115 0 174 213 238 394 449 253 5 232 5 203 5 178 5 166 103 5 91 78 5 116 41 28 5 16 0 372 3 356 3 3...

Page 12: ...12 MODE SELECTION FAN SPEED SELECTOR ADDRESS SETTING 1s DIGIT SWE1 SWE2 EMERGENCY OPERATION HEAT EMERGENCY OPERATION COOL LED OPERATION INDICATOR GREEN LED OPERARTION FOR HEATING ORANGE RECEIVING UNIT ADDRESS SETTING 10ths DIGIT SW14 BRANCH No CENTRALLY CONTROL REMOTE INDICATION SWITCH X1 AUX RELAY FUSE FUSE T3 15AL 250V LED1 POWER SUPPLY I B LED2 LED1 DP DRAIN PUMP OPTION DRAIN FLOAT SWITCH OPTIO...

Page 13: ... 10 Abnormal 1 5 White Red 2 6 Yellow Brown 3 5 Orange Red 4 6 Blue Brown Open or short Measure the resistance between the terminals using a tester Coil temperature 25 Normal 350 7 Abnormal Brown Red Brown Orange Brown Yellow Brown Green Open or short Fan motor MF Red Yellow Brown Orange Green Connect pin No M 1 2 3 4 5 6 LEV White Yellow Orange Blue Red Brown CN60 Refer to 8 1 3 Strainer 50mesh S...

Page 14: ...hermistor TH22 Gas pipe temperature thermistor TH23 TH24 Thermistor R0 15k 3 Fixed number of B 3480 2 Rt 15exp 3480 0 15k 10 9 6k 20 6 3k 25 5 4k 30 4 3k 40 3 0k Thermistor for lower temperature 1 Operation summary of the linear expansion valve Linear expansion valve opens closes through stepping motor after receiving the pulse signal from the indoor controller board Valve position can be changed ...

Page 15: ...light while the signals are output or keeps lighting even after the signals stop Countermeasures Exchange the indoor con troller board in case of drive circuit failure Linear expansion valve mechanism is locked Valve does not close completely Wrong connection of the connector or contact failure To check the linear expansion valve operate the indoor unit in fan mode and at the same time operate oth...

Page 16: ...ween 4 and 3 of the fan connector VCC DC15V Wiring recovery Replace indoor controller board Replace indoor controller board Replace the fan motor Replace the fan motor Indoor controller board fuse check Replace indoor controller board Replace the fan motor Is the voltage normal Is there contact failure No Yes No No Is the fuse normal Replace the fuse Yes Check the operation END OK Check the operat...

Page 17: ...0 Address board Initial setting Indoor controller board Initial setting SW3 Function selection Under suspension SW2 Capacity code Before power supply ON switch SW1 Mode Effective timing Under suspension selection Switch Pole Function Operation by switch Remarks Built in remote controller Indoor unit Changing the opening of linear expansion valve during thermo OFF 1 SW1 7 OFF ON OFF ON SW1 8 OFF OF...

Page 18: ... 1 Press the SET button using a pointed implement Check that the remote controller s display has stopped before continuing MODEL SELECT flashes and the model No 3 digits appears steadily lit 2 Press the MINUTE button twice The pair number appears flashing 3 Press the temperature buttons to select the pair number to set 4 Press the SET button using a pointed implement The set pair number is display...

Page 19: ...wire J41 J42 Pair No setting for wireless remote controller LDSWE A Connect to the wireless remote controller board S B CN2M Connect to the terminal block TB5 M NET transmission connecting wire 24 30VDC non polar Power supply from outdoor unit SW3 Function setting CN2G Pipe temperature thermistor Gas2 TH24 CN4F Drain float switch FS CN51 Centrally control led CN60 Liner expansion valve LEV output ...

Page 20: ...R1 PKFY P40VHM E PKFY P40VHM ER1 PKFY P50VHM E PKFY P50VHM ER1 SW1 Function setting SW12 Address setting 10ths DIGIT SW11 Address setting 1s DIGIT 8 3 2 Wireless remote controller board PKFY P32VHM E PKFY P32VHM ER1 PKFY P40VHM E PKFY P40VHM ER1 PKFY P50VHM E PKFY P50VHM ER1 LD101 Connect to the indoor controller board I B SW14 Branch No ...

Page 21: ...emove the hook PKFY P32VHM E PKFY P40VHM E PKFY P50VHM E PKFY P32VHM ER1 PKFY P40VHM ER1 PKFY P50VHM ER1 Be careful when removing heavy parts Figure 1 2 REMOVING THE FRONT PANEL 1 Press and unlock the knobs on both sides of the front panel and lift the front panel until it is level Pull the hinges forward to remove the front panel See Photo 2 2 Move the horizontal vanes in a downward direction 3 R...

Page 22: ...ox covers See Photo 3 3 Remove the nozzle assembly Refer to 5 4 Disconnect the transmission wiring of TB5 5 Disconnect the power supply wiring of TB2 6 Disconnect the wiring of MA remote controller TB15 7 Disconnect the connectors on the indoor controller board 8 Disconnect the connector for the ground wire See Photo 5 9 Pull the disconnected lead wire out from the electrical box 10 Remove the scr...

Page 23: ...fan to the lower left Photo 8 Photo 9 7 REMOVING THE VANE MOTOR 1 Remove the nozzle assembly Refer to 5 2 Remove the screws of the vane motor unit and pull out the vane motor unit 3 Remove the screws of the vane motor unit cover 4 Remove the vane motor from the vane motor unit 5 Disconnect the connector from the vane motor 8 REMOVING THE LIQUID PIPE THERMISTOR AND GAS PIPE THERMISTOR 1 Remove the ...

Page 24: ...en room temp thermistor is replaced be sure to use service parts No R01 N20 202 Photo 13 Photo 14 LEV Ground wire Heat exchanger Photo 15 Electrical box cover top Electrical box cover side Screw side cover Screw top cover Switch board cover Holder of wireless controller board Nozzle assembly Water cover Copyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Feb 2009 No OCH442 REVISED...

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