Mitsubishi PLFY-P32VKM.UK, PLFY-P40VKM.UK, PLFY-P50VKM.UK, PLFY-P63VKM.UK Service Manual

TECHNICAL & SERVICE MANUAL

SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

Indoor unit

PLFY-P32VKM

PLFY-P32VKM.UK

PLFY-P40VKM

PLFY-P40VKM.UK

PLFY-P50VKM

PLFY-P50VKM.UK

PLFY-P63VKM

PLFY-P63VKM.UK

No. OC204

[Model names]

INDOOR UNIT

Ceiling Cassettes

Series PLFY

CONTENTS

1. SAFETY PRECAUTION ·······················3

2. PART NAMES AND FUNCTIONS········4

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

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

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

REFRIGERANT SYSTEM DIAGRAM

···10

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

8. DISASSEMBLY PROCEDURE···········16

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

R407C

[Service Ref.]

R22

SAFETY PRECAUTION

Cautions for using with the outdoor unit which adopts R407C refrigerant.

· Do not use the existing refrigerant piping.

-The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.

· Do not use crushed, misshapen, or discoloured tubing. The inside of the tubing should be clean and free from harmful sulfuric compounds, oxidants, dirt, debris, oils and

moisture(or any other contaminants).

-Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil deteriorate.

· Store the piping to be used during installation indoors and keep both ends of the piping sealed until 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 liquid refrigerant to fill the system.

-If gas refrigerant is used to seal the system, the composition of the refrigerant in the 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 refrigerator oil to deteriorate.

· Use a vacuum pump with a reverse flow check valve.

-The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate.

· Use ester oil, ether oil or alkyl benzene(small amount) as the refrigerator oil to coat flares and flange connections.

-The refrigerator oil will degrade if it is mixed with a large amount of mineral oil.

· Do not used the following tools that are used with conventional refrigerants. (Gauge manifold, charge hose, charging cylinder, gas leak detector, reverse flow check valve, refrigerant charge

base, vacuum gauge, refrigerant recovery equipment)

-If the conventional refrigerant and refrigerator oil are mixed in the R407C , the refrigerant may deteriorated.

-If water is mixed in the R407C, the refrigerator oil may deteriorate.

-Since R407C dose not contain any chlorine, gas leak detectors for conventional refrigerants will not react to it.

· Be especially careful when managing the tools.

-If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.

· Do not use a charging cylinder.

-Using a charging cylinder may cause the refrigerant to deteriorate.

PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

● Remote controller

● Operation buttons

[PAR-F25MA]

● Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction.

Grille

Filters Removes dust and pollutants from intake air

Horizontal Air Outlet Sets horizontal air flow automatically during cooling or dehumidifying.

Air Intake Intakes air from room.

Press this button to switch the cool, electronic dry (dehumidify), automatic and heater modes.

OPERATION SWITCH button

This sets the room temperature. 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 test operation. Do not use it for normal operation.

CHECK-TEST RUN button

This sets the ventilation fan speed.

VENTILATION button

This switches the horizontal fan motion ON and OFF.

(This button does not operate in this model)

(When the only LOSSNAY is connected.)

LOUVER button

This adjusts the vertical angle of the ventilation.

AIR DIRECTION button

This resets the filter service indication display

FILTER button

This sets the current time,

start time

and stop time.

TIME SETTING button

This sets the ventilation fan speed.

AIR SPEED button

Caution

● Only the Power display lights when the unit is stopped and power is supplied to the unit.

● When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not a

malfunction.

● When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch button and TEMP. adjustment button do not operate.

● “NOT AVAILABLE” is displayed when the Air speed button is pressed.This indicates that this room unit is not equipped with the fan direction adjustment function and the louver function.

● When power is turned ON for the first time, it is normal that “H0” is displayed on the room temperature indication (For max. 2minutes). Please wait until this “H0” indication has disappeared then start the operation.

CENTRALLY CONTROLLED display

This indicates when the unit is controlled by optional features such as central control type remote controller.

TIMER display

This indicates when the continuous operation and time operation modes are set. It also displays the time for the timer operation at the same time as when it is set.

OPERATION MODE display

This indicates the operation mode.

STANDBY display

This indicates when the standby mode is set from the time the sleep operation starts until the heating air is discharged.

DEFROST display

This indicates when the defrost operation is performed.

CHECK display

This 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 bottom left, a condition where all display lamps light is shown for explanation purposes although this differs from actual operation.

Operation lamp

This lamp lights during operation, goes off when the unit stops and flashes when a malfunction occurs.

POWER display

This lamp lights when electricity is supplied to the unit.

SET TEMPERATURE display

This displays the selected setting temperature.

FAN SPEED display

This displays the air direction.

ROOM TEMPERATURE display

The temperature of the suction air is displayed during operation. The display range is 8° to 39°C. The display flashes 8°C when the actual temperature is less than 8° and flashes 39°C when the actual temperature is greater than 39°C.

display

This display lights in the check mode or when a test operation is performed.

CHECK MODE

TEST RUN

FILTER display

This lamp lights when the filter need to be cleaned.

AIR DIRECTION display

The selected fan speed is displayed.

SPECIFICATIONS

3-1. Specification

Item

Power

Cooling

capacity

Heating

capacity

Cooling

Power supply

Heating

Cooling

Starting

current

Heating

Cooling

Power

factor

Electric characteristic

(munsell symbol)

Dimensions

Heating

Exterior

Height

Width

Depth

Heat exchanger

Fan ✕ No

Air flow #3

External

static pressure

Fan motor

output

Insulator

Air filter

Pipe

dimensions

Gas side

Liquid

side

Unit drain pipe size

Noise level

Product weight

V·Hz

kcal/h

BTU/h

kcal/h

BTU/h

/min

ømm

PLFY-P32VKM.UK PLFY-P40VKM.UK PLFY-P50VKM.UK PLFY-P63VKM.UK

Single phase 220V-240V 50 Hz

3,150

12,500

3.7

3,550

14,100

4.1

0.13

0.60

4,000

15,900

4.7

4,500

17,900

5.2

0.13

0.60

5,000

19,800

5.8

5,600

22,200

6.6

0.14

0.64

6,300

25,000

7.3

7,100

28,200

8.3

0.15

0.68

-Unit : Galvanized sheets · Standard grill : ABS resin acrylic coating Munsell<0.70y 8.59/0.97>

298<30>

660<760>

Cross fin

Turbo fan ✕ 1

15-14.5-14-13

16-15-14-13

17-16-15-14

0.030

Polyethylene sheet

PP honeycomb fabric

12.7(1/2")

6.35(1/4")

15.88(5/8")

9.52(3/8")

ID32 (PVC pipe VP-25 connectable)

35-34-32.5-31

19<3.7>

37-35.5-34-32

39-38-36.5-35

20<3.7>

Note 1. Rating conditions (JIS B 8615)

Cooling: Indoor: D.B. 27°C, W.B. 19.5°C

outdoor: D.B. 35°C

Heating: Indoor: D.B. 21°C

outdoor: D.B. 7°C, W.B. 6°C Note 2. The number indicated in < > is just for the grill. Note 3. Air flow and the noise level are indicated as High-Medium 1-Medium 2-Low.

3-2. Electrical parts specifications

Model

Symbol

Parts name

PLFY-P32VKM.UK PLFY-P40VKM.UK PLFY-P50VKM.UK PLFY-P63VKM.UK

Transformer

Room temperature thermistor

Liquid pipe thermistor

Gas pipe thermistor

Fuse (Indoor controller board)

Fan motor (with inner-thermostat)

inner-thermostat (Fan motor)

Fan motor capacitor

TH21

TH22

TH23

FUSE

(Primary) 50/60Hz 220-240V (Secondary) (18.4V 1.7A)

Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

250V 6.3A

6-pole OUTPUT 30W

PAI-V30F

OFF 125°C ± 5°C

ON 85°C ± 20°C

2.5µF ✕ 400V

Vane motor (with limit switch)

Drain-up mechanism

Drain sensor

Linear expansion valve

Electric heater (Dew prevention)

Power supply terminal block

Transmission terminal block

LEV

TB2

TB5

Heater resistance 82Ω/25°C Thermistor resistance

0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

MC8 200V-240V

2.5/2W 5/6R.P.M

PJV-1002

INPUT 8/7.5W 24L/Hr

DC12V Stepping motor drive port

dimension 3.2Ω (0~2000pulse)

EDM-402ME

240V 28.8W

(L, N, Earth) 330V 30A

(M1, M2, S) 330V 30A

OUTLINES AND DIMENSIONS

PLFY-P32VKM.UK, PLFY-P40VKM.UK PLFY-P50VKM.UK, PLFY-P63VKM.UK

Unit : mm

Models

PLFY-P32VKM.UK PLFY-P40VKM.UK

Refrigerant pipe

(6.35mmdia)

flared connection

1/4F

Refrigerant pipe

(12.7mmdia)

flared connection

1/2F

Refrigerant pipe

(9.52mmdia)

flared connection

3/8F

Refrigerant pipe

(15.88mmdia)

flared connection

5/8F

PLFY-P50VKM.UK PLFY-P63VKM.UK

Ceiling hole

Suspension bolt pitch

Suspension bolt M10 or

Air intake hole

Air outlet hole

Air intake grille

690~710 25~3525~35

640

660

466

460

66 35

760

117 117

117

435

13554

117

Ceiling hole

Suspension bolt pitch

Suspension bolt lower edge

Air outlet hole

690~710

25~35

65~80

760

460

466

6635

115

243

253

29830

- 2

507

660

Terminal block for powersupply

Terminal block for control

Drain hole

Drain hole ID32 VP-25 connection

W3/8

Feeding hole (Drain pump)

Leave space of 10~15mm between the top surface of the unit and the ceiling slab.

Ceiling surface

4-Auto vanes

Intake grille opening /closing side

Vane motor

Decorative panel

Control wire entry

Refrigerant piping side electric wire entry side

Power line entry

41 25

Liquid pipe

Gas pipe

Optional high-efficiency filter

-2

NOTE 1.The electrical parts box may be removed during servic ing. When connecting the power line and the control

wire,provide enough length to the electric wires. NOTE 2.When installing the optional high-efficiency filter,the

dimension between the transom and ceiling shall be more than 440mm. Also,when installing the optional

fresh air intake casement or the multi-functional case ment,the dimension between the transom and ceiling shall be more than 440mm. (The optional high efficiency filter can also be installed.)

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