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Mitsubishi Electric PKFY-P50VHM-E - User Manual

Mitsubishi Electric PKFY-P50VHM-E
32 pages
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TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES .........................2
2. SAFETY PRECAUTION
..........................
3
3. PART NAMES AND FUNCTIONS
..........
5
4. SPECIFICATION
...................................
12
5. OUTLINES AND DIMENSIONS
............
15
6. WIRING DIAGRAM
...............................
16
7. REFRIGERANT SYSTEM DIAGRAM
........
18
8. TROUBLESHOOTING
..........................
18
9. DISASSEMBLY PROCEDURE
.............
26
Indoor unit
[Model names] [Service Ref.]
No. OCH442
REVISED EDITION-B
INDOOR UNIT
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
Note:
This manual describes
only service data of the
indoor units.
RoHS compliant products
have <G> mark on the
spec name plate.
December 2012
PARTS CATALOG (OCB442)
Revision:
PKFY-P32/40/50VHM-ER2
have been added in
REVISED EDITION-B.
Some descriptions have
been modified.
Plase void OCH442
REVISED EDITION-A.
PKFY-P32VHM-E
PKFY-P32VHM-ER1
PKFY-P32VHM-ER2
PKFY-P40VHM-E
PKFY-P40VHM-ER1
PKFY-P40VHM-ER2
PKFY-P50VHM-E
PKFY-P50VHM-ER1
PKFY-P50VHM-ER2
PKFY-P32VHM-E
PKFY-P40VHM-E
PKFY-P50VHM-E

Questions and Answers

  • S
    Sabrina WashingtonAug 8, 2025
    What to do if there is wrong connection of the connector or contact failure in Mitsubishi Electric Air Conditioner?
    • K
      Kenneth PittmanAug 8, 2025
      If you suspect a wrong connection of the connector or contact failure, disconnect the connector at the controller board and then check the continuity.
  • M
    michael83Aug 14, 2025
    What to do if valve does not close completely in Mitsubishi Electric PKFY-P50VHM-E?
    • H
      holly58Aug 14, 2025
      If the valve does not close completely, and a large amount of refrigerant is leaked, exchange the linear expansion valve. However, if the leakage is small and not affecting normal operation, it is not necessary to exchange the linear expansion valve.
  • M
    mariebutlerAug 20, 2025
    How to fix operation circuit failure of the micro processor in Mitsubishi Electric PKFY-P50VHM-E?
    • J
      John RussellAug 20, 2025
      To address an operation circuit failure of the microprocessor: exchange the indoor controller board in case of drive circuit failure. Alternatively, disconnect the connector on the controller board, then connect an LED for checking. When power is turned on, pulse signals will be output for 10 seconds. If the LED does not light while the signals are output or keeps lighting even after the signals stop, there are likely defects in the operation circuit.
  • M
    Michael LeachAug 26, 2025
    What to do in case of short or breakage of the motor coil of the linear expansion valve in Mitsubishi Electric Air Conditioner?
    • J
      Jeffrey WattsAug 26, 2025
      If there is a short or breakage of the motor coil of the linear expansion valve, exchange the linear expansion valve.
  • J
    Jennifer MataSep 1, 2025
    What to do if linear expansion valve mechanism is locked in Mitsubishi Electric PKFY-P50VHM-E Air Conditioner?
    • B
      Brandon JohnsonSep 1, 2025
      If the linear expansion valve mechanism is locked, exchange the linear expansion valve.

Summary

2 SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing R410A refrigerant.

3 PART NAMES AND FUNCTIONS

4 SPECIFICATION

6 WIRING DIAGRAM

8 TROUBLESHOOTING

8-1. HOW TO CHECK THE PARTS

Procedures for checking various components like thermistors and motors.

THERMISTOR AND LINEAR EXPANSION VALVE CHARACTERISTICS

DC FAN MOTOR CHECK AND TROUBLESHOOTING

DC FAN MOTOR CHECK METHOD

8-2 FUNCTION OF DIP SWITCH

9 DISASSEMBLY PROCEDURE

REMOVING CONTROLLER BOARDS AND ELECTRICAL BOX

REMOVING INTERNAL COMPONENTS AND THERMISTORS

REMOVING HEAT EXCHANGER, LEV, AND ROOM THERMISTOR

Mitsubishi Electric PKFY-P50VHM-E Specifications

General IconGeneral
BrandMitsubishi Electric
ModelPKFY-P50VHM-E
CategoryAir Conditioner
LanguageEnglish

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