Mitsubishi Electric PKFY-P32VGM-A Technical & Service Manual Download Page 1

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TECHNICAL & SERVICE MANUAL

SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

CONTENTS

1. SAFETY PRECAUTION ·····························2

2. PART NAMES AND FUNCTIONS ·············4

3. SPECIFICATIONS ······································6

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

5. WIRING DIAGRAM ····································9

6. REFRIGERANT SYSTEM DIAGRAM······10

7. TROUBLE SHOOTING ····························11

8. DISASSEMBLY PROCEDURE ················16

9. PARTS LIST ·············································19

<Indoor unit>
[Model names]

[Service Ref.]

PKFY-P32VGM-A

PKFY-P40VGM-A

PKFY-P50VGM-A

No. OC250

Wall Mounted

Series PKFY

Indoor unit

R407C / R22

2001

OC250.qxp 2/24/01 9:16 AM Page 1

Summary of Contents for PKFY-P32VGM-A

Page 1: ...CATIONS 6 4 OUTLINES AND DIMENSIONS 8 5 WIRING DIAGRAM 9 6 REFRIGERANT SYSTEM DIAGRAM 10 7 TROUBLE SHOOTING 11 8 DISASSEMBLY PROCEDURE 16 9 PARTS LIST 19 Indoor unit Model names Service Ref PKFY P32VGM A PKFY P32VGM A PKFY P40VGM A PKFY P40VGM A PKFY P50VGM A PKFY P50VGM A No OC250 Wall Mounted Series PKFY Indoor unit R407C R22 2001 ...

Page 2: ...til just before brazing Store elbows and other joints in a plastic bag If dust dirt or water enters the refrigerant cycle deterioration of the oil and compressor trouble may result Use ESTR ETHER or HAB as the lubricant to coat flares and flange connection parts Use liquid refrigerant to seal the system If gas refrigerant is used to seal the system the composition of the refrigerant in the cylinde...

Page 3: ...ools for R407C refrigerant No Tool name Specifications 1 Gauge manifold Only for R407C Use the existing fitting SPECIFICATIONS UNF7 16 Use high tension side pressure of 3 43MPa G or over 2 Charge hose Only for R407C Use pressure performance of 5 10MPa G or over 3 Electronic scale 4 Gas leak detector Use the detector for R134a or R407C 5 Adapter for reverse flow check Attach on vacuum pump 6 Refrig...

Page 4: ...re The temperature setting can be performed in 1 units Setting range Cooler 19 to 30 Heater 17 to 28 TEMP ADJUSTMENT button This switches between continuous operation and the timer operation TIMER button This switches between the operation and stop modes each time it is pressed The lamp on this button lights during operation ON OFF button Only press this button to perform an inspection check or te...

Page 5: ...his indicates when a malfunction has occurred in the unit which should be checked CLOCK display The current time start time and stop time can be displayed in ten second intervals by pressing the time switch button The start time or stop time is always displayed during the timer operation Display In this display example on the bot tom left a condition where all dis play lamps light is shown for exp...

Page 6: ...ting Cooling Heating Current PKFY P32VGM A PKFY P40VGM A PKFY P50VGM A Single phase 220V 230V 240V 50Hz 220V 60Hz 3 6 4 0 4 5 5 0 0 07 0 07 0 32 0 32 Plastic white 0 70Y 8 59 0 97 340 990 235 Cross fin Aluminum plate fin and copper tube Linflow fan 1 0 0 03 Polyethylene sheet PP honey comb O D 20 PVC pipe VP 20 connectable 16 5 6 6 3 12 11 10 9 15 88 5 8 9 52 3 8 43 40 37 34 11 5 10 5 9 5 8 12 7 1...

Page 7: ...ol TH21 TH22 TH23 FUSE MF C1 MV LEV TB2 TB5 TB15 PKFY P32VGM A PKFY P40VGM A Resistance 0 C 15kΩ 10 C 9 6kΩ 20 C 6 3kΩ 25 C 5 2kΩ 30 C 4 3kΩ 40 C 3 0kΩ Resistance 0 C 15kΩ 10 C 9 6kΩ 20 C 6 3kΩ 25 C 5 2kΩ 30 C 4 3kΩ 40 C 3 0kΩ Resistance 0 C 15kΩ 10 C 9 6kΩ 20 C 6 3kΩ 25 C 5 2kΩ 30 C 4 3kΩ 40 C 3 0kΩ 250V 6 3A PM4V30 K 220 240V 220V 50 60Hz 4 pole Output 30W OFF 125 5 2 0µF 440V MP 35 EA DC12V DC1...

Page 8: ...4 31 280 80 60 70 245 50 395 400 190 60 70 35 160 40 705 235 Less than 15 198 70 245 60 235 53 340 715 225 340 80 280 233 990 79 Unit mm PKFY P32VGM A PKFY P40VGM A PKFY P50VGM A Installation plate balance point hole 49 5 hole for tapping screw Knock out hole for right rear piping Right rear piping hole Necessary clearance for Unit installation R 5 2 5 R52 5 R5 2 5 R5 2 5 Unit center Right side Al...

Page 9: ... lamp is lit Main power supply Indoor unit 220 240V power on lamp is lit LED on indoor board for service Power supply for MA Remote controller Function Main power supply Meaning LED2 LED1 Mark Name Name Name Symbol Symbol Symbol Option selector SWC Linear expansion valve LEV Varistor ZNR Model selection Capacity code Mode selection Remote indication Centrally control Remote switch I B Indoor contr...

Page 10: ...re thermistor TH21 Gas pipe temperature thermistor TH23 Liquid pipe temperature thermistor TH22 Linear expansion valve Gas pipe Liquid pipe Flare connection PKFY P32VGM A PKFY P40VGM A PKFY P50VGM A Gas pipe PKFY P32VGM A PKFY P40VGM A 12 7 1 2 Liquid pipe 6 35 1 4 Capacity Item PKFY P50VGM A 15 88 5 8 9 52 3 8 ...

Page 11: ...he tester Surrounding temperature 20 C Normal 4 3k 9 6k Abnormal Open or short Normal Abnormal 186 214 Open or short Motor terminal or relay connector Normal Abnormal Red Black 141 2Ω Open or short White Black 131 5Ω Normal 1 5 White Red 150 10 Abnormal Open or short 2 6 Yellow Brown 3 5 Orange Red 4 6 Blue Brown 1 3 2 2 3 1 Red White Black Fan Protector Orange Red White Blue Brown Yellow 3 6 1 5 ...

Page 12: ...e temperature thermistor TH22 Gas pipe temperature thermistor TH23 Thermistor R0 15k 3 Fixed number of B 3480k 2 Rt 15exp 3480 0 15k 10 9 6k 20 6 3k 25 5 2k 30 4 3k 40 3 0k Thermistor for lower temperature Linear expansion valve Operation summary of the linear expansion valve Linear expansion valve open close through stepping motor after receiving the pulse signal from the indoor controller board ...

Page 13: ...sed all the way It is not necessary to exchange the linear expansion valve if the leakage is small and not making any trouble Liquid pipe thermistor Linear expansion valve Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked This ticking sound is the sign of the abnormality Check the color of lead wire and missing terminal of the con nector Excha...

Page 14: ...w4 Horizontal angle Down B C Effective Not effective Heater 4deg up Not effective Effective Target Superheat setting w5 9degrees 6degrees Target Sub cool setting 15degrees 10degrees ON OFF 1 2 3 4 5 ON OFF 1 2 3 4 5 6 7 8 9 10 ON OFF 1 2 3 4 5 6 MODELS SW2 MODELS SW2 MODELS SW2 PKFY P32VGM A PKFY P40VGM A Address board At delivery Indoor controller board Indoor controller board Indoor controller b...

Page 15: ...12 2nd digit address setting Rotary switch SW14 Connect ion No setting Rotary switch Address setting should be done when M NET remote controller is being used This is the switch to be used when the indoor unit is operated with R2 series outdoor unit as a set 220V 240V 220V 240V Address board At delivery 2 SW5 Voltage Selection If the unit is used at the 230V or 240V area set the voltage to 240V If...

Page 16: ...3screws 4 After removing the lower side of the front panel a little remove it as pulling toward upper 3 REMOVING THE INDOOR CONTROLLER BOARD 1 Remove the terminal block cover 2 Remove the front panel see the photo 1 3 Remove the electrical parts box 2screws 4 Remove the electrical parts box cover 1screw 5 Disconnect the connector on the indoor controller board and remove the controller board by Pu...

Page 17: ...emoving the gas pipe thermistor TH23 1Disconnect the connector CN29 black on indoor controller board 2Remove the gas pipe thermistor with set to the pipe Electrical parts box Liquid thermistor Room thermistor Gas pipe thermistor 6 REMOVING THE NOZZLE ASSEMBLE 1 Disconnect the connector CN6V on the indoor controller board 2 Disconnect the lead wire of the vane motor 3 Remove the corner cover 4 Pull...

Page 18: ...ixture fixing bearing w The fan motor is removable first when the fan removing is hard w When resetting the fan to the fan motor Locate and fix the shaft after installing the fan Photo10 Heat exchanger Set screws Fixture fixing bearing 10 REMOVING THE HEAT EXCHANGER 1 Remove the terminal block cover 2 Remove the front panel see the photo 1 3 Remove the electrical parts box see the photo 7 4 Remove...

Page 19: ...No Wiring Diagram Symbol Recom mended Q ty Unit Amount Price R01 07Y 651 R01 07Y 092 R01 07Y 691 R01 A16 500 R01 07Y 002 R01 07Y 096 R01 85Y 304 T7W B01 294 R01 07Y 658 R01 07Y 635 R01 07Y 808 R01 07Y 623 R01 09Y 658 FRONT PANEL VANE SLEEVE FRONT GRILLE AIR FILTER AUTO VANE SCREW CAP ADDRESS CABLE ADDRESS BOARD CORNER COVER BOX ASSEMBLY BACK PLATE UNDER COVER CORNER COVER A B 3 6 13 4 7 12 9 11 10...

Page 20: ...7Y 106 T7W A00 675 R01 07Y 524 R01 07Y 530 R01 07Y 059 R01 07Y 038 R01 09Y 038 R01 E02 223 R01 07Y 527 R01 07Y 135 R01 07Y 105 T7W 521 716 T7W E00 716 R01 556 246 R01 588 255 R01 E02 313 T7W E10 310 T7W 520 239 R01 E26 202 R01 E28 202 R01 E03 202 R01 07Y 130 R01 E27 401 FAN MOTOR HEAT EXCHANGER HEAT EXCHANGER HEAT EXCHANGER LINE FLOW FAN SLEEVE BEARING BEARING MOUNT BEARING SUPPORT FAN GUARD DRAIN...

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