Mitsubishi Electric PLFY-P20VBM-E.UK User Manual

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TECHNICAL & SERVICE MANUAL

Indoor unit

[Model Name]

PLFY-P20VBM-E

PLFY-P25VBM-E

PLFY-P32VBM-E

PLFY-P40VBM-E

PLFY-P50VBM-E

PLFY-P63VBM-E

PLFY-P80VBM-E

PLFY-P100VBM-E

PLFY-P125VBM-E

No. OCH413

REVISED EDITION-E

CONTENTS

1. TECHNICAL CHANGES

.........................

3

2. SAFETY PRECAUTION

..........................

4

3. PARTS NAMES AND FUNCTIONS

........

6

4. SPECIFICATIONS

.................................

13

5. 4-WAY AIR FLOW SYSTEM

.................

19

6. OUTLINES AND DIMENSIONS

............

22

7. WIRING DIAGRAM

...............................

23

8.

REFRIGERANT SYSTEM DIAGRAM

......

25

9. TROUBLESHOOTING

..........................

26

10. SPECIAL FUNCTION

...........................

35

11. DISASSEMBLY PROCEDURE

.............

42

Notes:

• This manual describes ser-

vice data of the indoor units

only.

• RoHS compliant products

have <G> mark on the spec

name plate.

July 2014

INDOOR UNIT

Model name

indication

PARTS CATALOG (OCB413)

Revision:

•

Added

PLFY-P20VBM-E.UK and

PLFY-P25VBM-E.UK in

REVISED EDITION-E.

• Some descriptions have

been modified.

• Please void OCH413

REVISED EDITION-D.

[Service Ref.]

Refer to page 2.

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

Table of Contents

Questions and Answers:

K
Kim ButlerAug 18, 2025
Why is my Mitsubishi Electric PLFY-P20VBM-E.UK not cooling or heating well?
- D
  Donald GilbertAug 19, 2025
  Your Mitsubishi Electric Air Conditioner might not be heating or cooling well due to several reasons. Reduced airflow from a dirty or clogged filter is one potential cause, so clean the filter. Check the temperature adjustment and adjust the set temperature. Also, ensure there is plenty of space around the outdoor unit and that neither the indoor unit's air intake nor outlet is blocked. Finally, check if a door or window has been left open.
J
Jeremy DorseyAug 21, 2025
What to do if the moving part of my Mitsubishi Electric PLFY-P20VBM-E.UK is up but not working properly?
- A
  Amy MontoyaAug 21, 2025
  If the moving part of your Mitsubishi Electric Air Conditioner is in the 'UP' state and not behaving as expected (other than a short circuit), measure the resistance between the terminals with a tester.
D
denise33Aug 23, 2025
What to do if the moving part of my Mitsubishi Electric PLFY-P20VBM-E.UK is down but not working properly?
- J
  John MooreAug 23, 2025
  If the moving part of your Mitsubishi Electric Air Conditioner is in the 'DOWN' state and its behavior is not normal (excluding an open circuit), measure the resistance between the terminals with a tester.
L
Leslie MurilloAug 26, 2025
What to do if my Mitsubishi Electric PLFY-P20VBM-E.UK does not operate even when pressing the ON/OFF button?
- G
  Gina CombsAug 26, 2025
  If your Mitsubishi Electric Air Conditioner isn't turning on even when you press the ON/OFF button, check if the power switch of the indoor unit is turned off. If it is, turn the power switch on.
J
Jennifer Smith PhDAug 27, 2025
What to do if nothing appears on my Mitsubishi Electric PLFY-P20VBM-E.UK Air Conditioner wireless remote controller display?
- M
  Mariah MurphyAug 28, 2025
  If nothing appears on your Mitsubishi Electric Air Conditioner's wireless remote controller display, or the display is faint, the batteries may be low. Replace the batteries and press the Reset button. If nothing appears even after replacing the batteries, ensure they are installed in the correct directions (+, –).
T
Tina AlvarezAug 30, 2025
What to do if there is an open or short in the Red-Yellow connector of a Mitsubishi Electric PLFY-P20VBM-E.UK Air Conditioner?
- D
  Darren AndrewsAug 30, 2025
  To troubleshoot an open or short circuit in the Red-Yellow connector of your Mitsubishi Electric Air Conditioner, measure the resistance between the terminals with a tester at an ambient temperature of 20-30 degrees. Alternatively, disconnect the connector and then measure the resistance with a tester at an ambient temperature of 10-30 degrees.
J
John LynnSep 1, 2025
What to do if the i-see sensor connector of a Mitsubishi Electric PLFY-P20VBM-E.UK Air Conditioner is not normal?
- C
  Curtis FloresSep 1, 2025
  If you are experiencing issues with the i-see sensor connector on your Mitsubishi Electric Air Conditioner, measure the power voltage between the connectors with a tester while the electricity is turned on.
J
John BryantSep 3, 2025
How to troubleshoot an open or short in the vane motor for the i-see sensor of a Mitsubishi Electric PLFY-P20VBM-E.UK?
- K
  Kelly PachecoSep 4, 2025
  If you suspect an open or short circuit in the vane motor for the i-see sensor of your Mitsubishi Electric Air Conditioner, measure the resistance between the terminals with a tester at an ambient temperature of 20-30 degrees.
G
Gwendolyn ScottSep 5, 2025
How to troubleshoot an open or short in the drain pump of a Mitsubishi Electric PLFY-P20VBM-E.UK?
- T
  Timothy SmithSep 6, 2025
  To troubleshoot an open or short circuit in the drain pump of your Mitsubishi Electric Air Conditioner, measure the resistance between the terminals with a tester. Ensure the winding temperature is at 20 degrees Celsius.
B
Bernard McdonaldSep 8, 2025
What to do if my Mitsubishi Electric PLFY-P20VBM-E.UK operation lamp is flashing?
- D
  donna24Sep 8, 2025
  If the operation lamp near the receiver on your Mitsubishi Electric Air Conditioner's indoor unit is flashing, the self-diagnosis function has activated to protect the unit. Do not attempt to repair it yourself. Turn off the power switch immediately and consult your dealer.

Mitsubishi Electric PLFY-P20VBM-E.UK Specifications

General

Type	Ceiling Cassette
Cooling Capacity (kW)	2.2
Heating Capacity (kW)	2.5
Energy Efficiency Class (Heating)	A+
Refrigerant	R32
Power Supply	220-240V, 50Hz
Dimensions (Indoor Unit)	245 x 570 x 570 mm

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