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

SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

No. OC259

Series PLFY

Indoor unit
[Model names] [Service Ref.]

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

Ceiling Cassettes

R407C

CONTENTS

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

2. PART NAMES AND FUNCTIONS···········5

3. SPECIFICATION······································7

4. OUTLINES AND DIMENSIONS···············9

5. WIRING DIAGRAM································10

6.

REFRIGERANT SYSTEM DIAGRAM

7. TROUBLE SHOOTING··························12

8. DISASSEMBLY PROCEDURE··············17

9. PARTS LIST···········································20

INDOOR UNIT

10. OPTIONAL PARTS·················Back cover

R22

·······11

1

SAFETY PRECAUTION

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

· Do not use the existing refrigerant piping.

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

· Use “low residual oil piping”.

-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.

· 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 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 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 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 lubricant to deteriorate.

3

[1] Service tools

Gravimeter

Unit

Use the below service tools as exclusive tools 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 Refrigerant charge base.
7 Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

8 Refrigerant recovery equipment.

[2] Notice on repair service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.

[3] Refrigerant recharging

(1) Refrigerant recharging process

1Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe.

·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.

4

2

Auto Air Swing Vane
Disperses airflow up and

down and adjusts the angle
of airflow direction.

Grille

Filters
Remove dust and pollutants
from return air

Horizontal Air Outlet
Sets airflow horizontal automatically
during cooling or dehumidifying.

Air Intake
Returns air from room.

PAR-20MAA

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN
FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY
DEFROST

FILTER

CHECK TEST

TEMP.

TIMER SET

Press this button to switch the cooler,
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 switch the horizontal fan motion
ON and OFF.

(Not available for this model.)

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

PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

● Remote controller

● Operation buttons

[PAR-20MAA]

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

5

● Display

PAR-20MAA

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN
FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY
DEFROST

FILTER

CHECK TEST

TEMP.

TIMER SET

CENTRALLY
CONTROLLED display

This indicates when the unit is con-

trolled 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 display 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

The [STANDBY] symbol is only
displayed from the time the heating

operation starts unit the heated air
begins to blow.

DEFROST display

This indicates when the defrost oper-

ation is performed.

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.

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.

AIR DIRECTION display

This displays the air direction.

AIR SPEED display

The selected fan speed is displayed.

ROOM TEMPERATURE display
The temperature of the suction air is

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

Operation lamp

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

CHECK MODE

TEST RUN

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

display

FILTER display

CHECK display

This indicates when a malfunction

has occurred in the unit which should
be checked.

SET TEMPERATURE display

This displays the selected setting

temperature.

Caution

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

● 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 are 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 disappear then start the operation.

POWER display

This lamp lights when electricity is
supplied to the unit.

This lamp lights when the filter need
to be cleaned.

6

3

Item

kW
kW
kW
kW

A
A

—
mm
mm
mm

—

—

k/min

Pa

kW

—

—

[mm(in.)
[mm(in.)

[mm

dB

kg

Cooling capacity

Power

Heat exchanger

Insulator

Air filter

Fan ✕ No

Air flow W3

Pipe

dimensions

Cond. drain pipe size

Noise level W3
Product weight

Exterior

(munsell symbol)

Fan motor

output

External

static pressure

Liquid

side

Gas
side

Heating capacity

F
a
n

Dimensions

Height

Width
Depth

Electric characteristic

Input

Cooling
Heating
Cooling
Heating

Current

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

3.6

4.0

0.13

0.13

0.60

0.60

4.5

5.0

0.13

0.13

0.60

0.60

5.6

6.3

0.14

0.14

0.64

0.64

7.1

8.0

0.15

0.15

0.68

0.68

16-15-14-13

15-14.5-14-13

12.7(1/2")

6.35(1/4")

35-34-32.5-31

17-16-15-14

Unit : Galvanized sheets · Standard grills : ABS resin acrylic coating Munsell<0.70Y 8.59/0.97>

298<30>
660<760>
660<760>

Cross fin

Turbo fan ✕ 1

0

0.030

Polyethylene sheet

PP honey comb

O.D.32 (PVC pipe VP-25 connectable)

15.88(5/8")

9.52(3/8")

37-35.5-34-32

39-38-36.5-35

19<3.7>

20<3.7>

Single phase , 220-230-240V , 50Hz

[,V,Hz

SPECIFICATION

3-1. Specification

Note 1. Rating conditions(JIS B 8616)

Note 2. The number indicated in < > is just for the grill.

W 3. Air flow and the noise level are indicated as High-Middium 1-Middium 2-Low.

Cooling : Indoor : D.B. 27°C W.B. 19.0°C
Heating : Indoor : D.B. 20°C

outdoor : D.B. 35°C
outdoor : D.B. 7°C W.B. 6°C

7

3-2. Electrical parts specifications

Model

Parts

Symbol

name

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

Room temperature
thermistor

Liquid pipe thermistor

Gas pipe thermistor TH23 Resistance 0:/15k', 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k'

Fuse FUSE 250V 6.3A

(Indoor controller board)

Fan motor
(with Inner-thermostat)

Fan motor capacitor C

Vane motor MV

(with limit switch)

TH21 Resistance 0:/15k

TH22 Resistance 0:/15k', 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k'

MF

Inner-thermostat

', 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k'

6-pole OUTPUT 30W

PA1-V30F

OFF 125:±5:

ON 85:±20:

2.5+ x 400V

MC8 200V-240V

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

Drain-up mechanism DP

Drain sensor DS

Linear expansion valve LEV

Electric heater H2 240V 28.8W

(Condensation proof)

Power supply terminal
block

Transmission terminal

block

MA remote controller
terminal block

TB15 (1,2) 250V 10A

Heater resistance 0:/6k

TB2 (L,N,;) 330V 30A

TB5 (M1,M2,S) 250V 20A

', 10:/3.9k', 20:/2.6k', 25:/2.2k', 30:/1.8k', 40:/1.3k'

INPUT 8/7.5W 24R/Hr

DC12V Stepping motor drive port

dimension 3.2

PJV-1002

(0~2000pulse)

'

EDM-402ME

8

4

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

Air outlet hole

690~710

25~3525~35

65~80

760

460

466

6635

115

243

253

29830

54

+3

- 2

507

660

54

53

Terminal block for power supply

Terminal block for
MA remote controller

Terminal block for
transmission

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

+3

-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

space inside the ceiling should be 440mm or more.
Also, when installing the optional the multi-functional

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

OUTLINES AND DIMENSIONS

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

Models

PLFY-P32VKM-A.UK
PLFY-P40VKM-A.UK

PLFY-P50VKM-A.UK
PLFY-P63VKM-A.UK

1

Refrigerant pipe

(6.35mmdia)

flared connection

1/4F

Refrigerant pipe

(9.52mmdia)

flared connection

3/8F

Unit : mm

2

Refrigerant pipe

(12.7mmdia)

flared connection

1/2F

Refrigerant pipe

(15.88mmdia)

flared connection

5/8F

9

5

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

WIRING DIAGRAM

10

REFRIGERANT SYSTEM DIAGRAM6

Strainer (#50mesh)

Strainer (#100mesh)

Strainer (#100mesh)

Heat exchanger

Room temperature thermistor TH21

Gas pipe thermistor TH23

Liquid pipe thermistor TH22

Linear expansion valve

Gas pipe

Liquid pipe

Flare connection

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

Item

Gas pipe
Liquid pipe

Capacity

PLFY-P32VKM-A.UK
PLFY-P40VKM-A.UK

PLFY-P50VKM-A.UK
PLFY-P63VKM-A.UK

{12.7(1/2’’) {15.88(5/8’’)
{6.35(1/4’’) {9.52(3/8’’)

11

7

1

1

2

2

3

3

Red

White

Black

Relay connector

Protector

M

4

6

2

3

5

1

Blue

Brown

Yellow

Orange

Red

White

1
2

Gray

Gray

1
2
3

TROUBLE SHOOTING

7-1. How to check the parts PLFY-P32/P40/P50/P63VKM-A.UK

Parts name Check points

Room temperature
thermistor

Liquid pipe thermistor
Gas pipe thermistor

(TH21)
(TH22)
(TH23)

Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 10°C~30°C)

Normal

4.3k'~9.6k'

Abnormal

Open or short

(Refer to the next page for a detail..)

Vane motor

Fan motor

Linear expansion
valve

Drain-up
mechanism

Measure the resistance between the terminals using a tester.
(Surrounding temperature 20;~30;)

Normal

Approx.14k'

Measure the resistance between the terminals using a tester.

Motor terminal

or

Relay connector

Red-Black

White-Black

Disconnect the connector then measure the resistance valve using a tester.
(Refer to the next page for a detail.)

(1)-(5)

White-Red

(2)-(6)

Yellow-

Abnormal

Open or short

PLFY- • VKM-A.UK

P32,P40,P50,P63

Normal

(3)-(5)

Blown

Orange-Red

Normal

136.2'

197.5'

(4)-(6)

Blue-Brown

Abnormal

Open or short

Abnormal

Open or short

150' ±10%

Measure the resistance between the terminals using a tester.(Surrounding temperature : 20;~30;)

Normal

327'

Abnormal

Open or short

Drain sensor

Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Surrounding temperature : 0; ~ 60;)

Normal

0.6k'~6.0k'

Abnormal

Open or short

12

(Refer to the next page for a detail..)

<Thermistor Characteristic graph>

-200 20406080

< Thermistor for drain sensor >

Temperature (:)

0

1

2

3

4

5

6

7

8

9

10

Resistance (K")

Thermistor for
lower temperature

Room temperature thermistor(TH21)
Liquid pipe thermistor(TH22)
Gas pipe thermistor(TH23)

Thermistor R0=15k' ±3%
Fixed number of B=3480k' ±2%

Rt=15exp { 3480( ) }

1

273+t

1

273

0: 15k'
10: 9.6k'
20: 6.3k'
25: 5.2k'
30: 4.3k'
40: 3.0k'

Thermistor for
drain sensor

Thermistor R0=6.0k' ±5%
Fixed number of B=3390k' ±2%

< Thermistor for lower temperature >

50

40

30

20

Resistance (K")

10

0

-20 -10 0 10 20 30 40 50
Temperature (:)

Rt=6exp { 3390( ) }

0: 6.0k'
10: 3.9k'
20: 2.6k'
25: 2.2k'
30: 1.8k'
40: 1.3k'

Linear expansion valve

① 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.

• Valve position can be changed in proportion to the number of pulse signal.
<Connection between the indoor controller board and the linear expansion valve>

Note : Since the number of the connector at the controller board side and the relay connector are different, follow the color of

the lead wire.

1

273+t

Linear expansion valve

4

M

6

2

5

White

1

Red

3

Orange

Blue

Brown

Yellow

1

273

[4
[3

[2
[1

Relay connector

5

1
3

4
6

13

Brown

Red

Blue

Orange

Yellow

White

Connector(CN60)

Controller board

DC12V

62
5

4
3

2
1

Drive circuit

[4
[3

[2
[1

<Output pulse signal and the valve operation>

D

A

E

B

C

Open

Extra tightning (80~100 pulse)

Pulse number

2000 pulse
Opening a valve
all the way

Close

Valve position (capacity)

6
5
4
3
2
1

LED1T

Thermistor
(Liquid pipe)

Linear
expansion
valve

150

'

10%.

Output

(Phase)

{1
{2
{3
{4

Linear expansion valve operation

➁

1
ON
ON

OFF
OFF

2

OFF

ON
ON

OFF

Output

3
OFF
OFF

ON
ON

4

ON
OFF
OFF

ON

Closing a valve : 1 → 2 → 3 → 4 → 1
Opening a valve : 4 → 3 → 2 → 1 → 4

The output pulse shifts in above order.

❈ 1. When linear expansion valve operation stops, all output phase

become OFF.

2. At phase interruption or when phase does not shift in order,
motor does not rotate smoothly and motor will locks and vibrates.

❈ When the switch is turned on, 2200 pulse closing valve signal

will be send till it goes to

A point in order to define the valve posi-

tion.

When the valve move smoothly, there is no noise or vibration
occurring from the linear expansion valve : however, when the
pulse number moves from E to A or when the valve is locked,
more noise can be heard than normal situation.

❈ Noise can be detected by placing the ear against the screw dri-

ver handle while putting the screw driver to the linear expansion
valve.

Trouble shooting

➂

Symptom

Operation circuit fail­ure of the micro
processor.

Linear expansion
valve mechanism is
locked.

Short or breakage of
the motor coil of the
linear expansion
valve.

Valve doesn't close
completely (thermis­tor leaking).

Wrong connection of
the connector or
contact failure.

Check points

Disconnect the connector on the controller board, then con­nect LED for checking.

Pulse signal will be sent out for 10 seconds as soon as the
main switch is turn on. If there is LED with lights on or lights
off, it means the operation circuit is abnormal.

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.

Measure the resistance between the each coil (red-white,
red-orange, brown-yellow, brown-blue) using a tester. It is
normal if the resistance is in the range of

To check the linear expansion valve, operate the indoor unit
in fan mode and at the same time operate other indoor units
in cooling mode, then check the pipe temperature <liquid

controller, it means the valve is not closed all the way. It is
not necessary to exchange the linear expansion valve, if the
leakage is small and not making any trouble.

Check the color of lead wire and missing terminal of the con­nector.

pipe temperature> of the indoor unit by the
outdoor multi controller board operation
monitor. During fan operation, linear
expansion valve is closed completely and if
there are some leaking, detecting tempera­ture of the thermistor will go lower. If the
detected temperature is much lower than
the temperature indicated in the remote

14

Countermeasures

Exchange the indoor con­troller board at drive circuit
failure.

Exchange the linear
expansion vale.

Exchange the linear
expansion valve.

If large amount of thermis­tor is leaked, exchange the
linear expansion valve.

Disconnect the connector
at the controller board,
then check the continuity.

7-2. FUNCTION OF DIP SWITCH

Switch Function Remarks

<At delivery>

ON

OFF

123456789

10

Address board

Operation by switch

ON OFF

Note :



w1

Fan operation at Heating

mode.

w2

Heater thermo ON is

operating.

w3

SW 1-7=OFF, SW 1-8=ON
→ Setting air flow.
SW 1-7=ON, SW 1-8=ON
→ Indoor fan stop.

Pole

Built-in remote controller
Provided
2,500hr
Effective
Thermostat ON signal indication
Always operated while the heat in ON w1
Low w3
Setting air flow w3
Effective
Effective

Filter clogging detection
Filter cleaning
Fresh air intake
Remote indication switching
Humidifier control

Air flow set in case of
Heat thermostat OFF

Auto restart function
Power ON/OFF

Indoor unit
Not provided
100hr
Not effective
Fan output indication
Operated depends on the condition w2
Extra low w3
Depends on SW1-7
Not effective
Not effective

Cooling only

Available

Available

Available

Second setting

Horizontal angle

Effective

Not effective

9(5)degrees

15degrees

Heat pump / Cooling only

Louver

Vane

Vane swing function

Vane horizontal angle

Vane cooling limit angle setting w4

Heat 4degrees up

Superheat setting temperature

w5

Sub cool setting temperature

Heat pump

Not available

Not available

Not available

First setting

Down B, C

Not effective

Effective

6(2)degrees

10degrees

1
2
3
4
5
6
7
8
9

10

1
2
3
4
5
6
7
8
9

10

SW1

Mode

Selection

SW2

Capacity

code

setting

1~6

1~5

SW3

Function

Selection

SW4

Unit

Selection

Indoor linear expansion
valve opening

Thermistor <intake temperature
detection> position

<At delivery>

ON

OFF

123456789

10

Indoor controller board

Note :



w4

At cooling mode, each
angle can be used only
1 hour.

w5

The numerical valve in
the parentheses shows
the case which the R22
outdoor unit is connected.

<At delivery>

Indoor controller board

<At delivery>

Set while the unit is off.

Set while the unit is off.

PLFY-P32VKM-A.UK

PLFY-P40VKM-A.UK

ON

OFF

123456789

10

PLFY-P50VKM-A.UK

PLFY-P63VKM-A.UK

Set while the unit is off.

Set for each capacity.

Indoor controller board

ON

OFF

12345

ON

OFF

MODELS

PLFY-P32

VKM-A.UK

PLFY-P50

VKM-A.UK

PLFY-P63

VKM-A.UK

PLFY-P40

VKM-A.UK

SW 2 MODELS SW 2

123456

ON

OFF

123456

ON

OFF

123456

ON

OFF

123456

ON

OFF

12345

15

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

0

8

F

7

E

6

D

5

C

4

B

3

A

2

9

1

0

8

F

7

E

6

D

5

C

4

B

3

A

2

9

1

220V 240V

Switch

SWA

Ceiling

height

selector

SWB

Discharge

outlet

number

selector

SWC

Option

selector

Rotary switchRotary switch

SW14

Connection

No.

setting

SW5

Voltage

Selection

SW11

1st digit

address

setting

SW12

2nd digit

address

setting

Pole

(High ceiling)

(Standard)

(Silent)

3
2
1

(Not used)

(3

direction)

(4 direction)

2
3
4

Option

Standard

Option

Standard

1~3

3

2

2

Operation by switch
✽ Ceiling height can be changed depends on

SWB setting.

Address setting should be done when M-NET
Remote controller is being used.

When attach the optional high performance
filter elements (multi function casement) to
the unit, be sure to attach it to the option
side in order to prevent the airflow reducing.

This is the switch to be used when the indoor
unit is operated with R2 series outdoor unit
as a set.

If the unit is used at the 230V or 240V area,
set the voltage to 240V.
If the unit is used at the 220V, set the voltage
to 220V.

Remarks

<At delivery>

Address board

<At delivery>

Address board

<At delivery>

Address board

Address can be set while the
unit is stopped.

Address board

<At delivery>

Address board

<At delivery>

Address board

3
2
1

2
3
4

SW1210SW11

1

SW12 SW11

SW14

SW14

<At delivery>

220V 240V

SWB

4 direction
3 direction

4
3

2.7m

2.4m

2.7m

3.0m

3.0m

3.3m

SWA

1

Silent Standard

High

ceiling

23

16

8

DISASSEMBLY PROCEDURE

INDOOR UNIT
PLFY-P63VKM-A.UK

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

1. Removing the air intake grille

(1) Press the button.
(2) Open the intake grille 90°.
(3) Remove the chip.
(4) Slide the shaft in the hinge to the left and remove the

intake grille.

2. Removing the fan guard

(1) Open the intake grille.
(2) Remove the 4 screws of the fan guard.

PUSH

Figure 1

PUSH button

Photo 1

Fan guard

Be careful on removing heavy parts.

Shaft

Intake grille

Fan guard screws

3. Removing the electrical parts box

(1) Remove the fan guard.
(2) Disconnect the lead wire of the vane motor from the clamp,

and disconnect the red connector (10P).
(3) Remove 2 of 4 screws from the electrical parts cover.
(4) Remove the electrical parts cover.
(5) Disconnect the following connectors from the box.

Red (3P) for the fan motor
White (2P) for the indoor coil thermistor
Blue (2P) for the drain pump
White (3P) for the drain sensor

(6) Disconnect the green anti-falling wire of the electrical parts

box.
(7) Remove 3 of 4 screws from the electrical parts box, and

loosen the other screw.
(8) Pull out the electrical parts box.

Electrical parts inside the box

Terminal block

Indoor fan capacitor

Room temperature thermistor

Indoor controller board

4. Removing the fan motor

(1) Remove the fan guard.
(2) Remove the turbo-fan nut and radiator aluminum cap.
(3) Pull out the turbo fan.
(4) Disconnect the connector of the fan motor lead wire.
(5) Remove the 3nuts of fan motor.

Photo 2

Photo 3

Electrical box

Room
temperature
thermistor

Radiator
aluminum cap

Photo 4

Connector

Screws

Screws

Fan motorConnector

Lead wire for
vane motor

Nut

ConnectorTerminal blockAnti-falling wire

Box
cover

Clamp

Indoor
controller
board

Capacitor

17

nut

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

5. Removing the room temperature thermistor

(1) Remove the fan guard.
(2) Remove the electrical box cover
(3) Remove the holder and the room temperature thermistor

by pulling the catch.

(4) Disconnect the red connector, CN20, on the indoor con-

troller board.

6. Removing the pipe temperature detection / liquid thermistor
and the pipe temperature detection / gas thermistor

(1) Remove the fan guard.
(2) Remove the electrical box cover.
(3) Remove the electrical box.
(4) Remove the turbo fan.
(5) Remove the screw of the service panel.
(6) Remove the service panel.
(7) Remove the pipe temperature detection / liquid thermistor

and the pipe temperature detection / gas thermistor which
is inserted into the holder installed to the thin copper pipe.

(8) Disconnect the each 2-pin white(liquid) and black(gas)

connector.

Photo 5

Room
temperature
thermistor

Photo 6

Pipe temperature
detection / gas
thermistor

Indoor controller board

Pipe temperature
detection / liquid
thermistor

Mounting hole

7. Removing the panel

(1) Open the intake grille.
(2) Disconnect the connector the vane motor.
(3) Remove 4 screws of the panel.
(4) Pulling the temporary hanging hook, remove the panel.

8. Removing the drain pan

(1) Remove the panel.
(2) Remove the fan guard.
(3) Remove the rubber bushing.
(4) Drain the remaining water in the drain pan.
(5) Remove the electrical box cover.
(6) Remove the electrical box.
(7) Remove the screw of the V.A. cover, and remove the V.A.

cover.

(8) Remove each screw of the corner supports 1,2, and 3,

and remove the corner supports 1,2 and 3.

(9) Pull out the drain pan.

wPull the left and right of the pan gradually.

Be careful not to crack or damage the pan.

Photo 7

screws

Panel

Photo 8

Corner
support 2

VAcover

Temporary hanging hook

Fan guard

Rubber
bush

Corner
support 3

screws

Temporary hanging hook

Screws

Corner
support 1

18

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

9. Removing the drain pump and drain sensor

(1) Remove the panel.
(2) Remove the fan guard.
(3) Remove the electrical parts cover.
(4) Remove the electrical parts box.
(5) Remove the drain pan.
(6) Remove 4 screws of the drain pump.
(7) Pulling the clip of the drain hose, pull out the drain hose

from the drain pump.
(8) Remove the drain sensor and the holder.
(9) Pull out the drain pump.

10. Removing the heat exchanger

(1) Remove the panel.
(2) Remove the fan guard.
(3) Remove the electrical parts cover.
(4) Remove the electrical parts box.
(5) Remove the drain pan.
(6) Remove the turbo fan.
(7) Remove the screw of the coil support A.
(8) Remove 2 screws of the coil support B.
(9) Remove 2 screws of the coil.

(10) Remove 4 screws of the piping cover of the outer wall,

and pull out the piping cover.

Photo 9

Clip

Screws

Photo 10

Coil support A

Drain hose

Drain pump

Heat exchanger

Drain sensor
holder

Photo 11

Piping

cover

Coil support B

Coil screws

Screws of piping
cover

19

9

1
2
3
4
5
6

1
1
1
2
1
1 R.B

AIR OUTLET GRILLE
AIR FILTER
INTAKE GRILLE
HINGE
GRILLE HANGER
MA-REMOTE CONTROLLER

65WRC5

<PAR-20MAA>

No. Part No. Part Name Specification

Q'ty/set

Price

Unit

Amount

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

PLFY-P32/P40/
P50/P63

VKM-A.UK
S70 29H 003
S70 29H 500
S70 29H 691
S70 29H 061
S70 29H 098
S70 030 713

PAR-20MAA

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN
FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY
DEFROST

FILTER

CHECK TEST

TEMP.

TIMER SET

PARTS LIST

PANEL PARTS
PLFY-P32VKM-A.UK
PLFY-P40VKM-A.UK
PLFY-P50VKM-A.UK
PLFY-P63VKM-A.UK

20

6

PANEL PARTS
PLFY-P32VKM-A.UK
PLFY-P40VKM-A.UK
PLFY-P50VKM-A.UK
PLFY-P63VKM-A.UK

2

1

14

3

1

4

1

4

8

5

7

Part number that is circled is not shown in the figure.

No. Part No. Part Name

1

S70 29H 002

2

S70 31H 063

3

S70 29H 223

4

S70 29H 063

5

S70 29H 041

6

S70 29H 040

7

S70 29H 056

8

S70 29H 085

9

S70 29H 049

AUTO VANE
SPRING JOINT 2
VANE MOTOR
SPRING JOINT 1
GRILLE GEAR LEFT
GRILLE GEAR RIGHT
PUSH BUTTON
AIR GUIDE
LID (UP)

Specification

21

Q'ty/set

PLFY-P32/P40
/P50/P63

VKM-A.UK

4
1
1
1
1
1
1
1
1

6

Remarks

(Drawing No.)

<3/SET>

Wiring

Diagram

Symbol

MV

Recom-

mended

Q'ty

Unit

Price

Amount

FUNCTIONAL PARTS
PLFY-P32VKM-A.UK
PLFY-P40VKM-A.UK
PLFY-P50VKM-A.UK
PLFY-P63VKM-A.UK

1
2

4

38

3

4

5

6

7

8

9

10
11
12

3

37

36

35

34
33

32
31

30

29
28

13
14

15
16

17
18

20

22

21

27

26

11

25

24

2219

23

1
2
3
4
5

6

7
8

9
10
11
12
13
14

15

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

3
1
2
2
1
1

1
1
1
1
2
1
1
1

1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

3
1
2
2
1

1
1

1

1
1
2
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

3
1
2
2
1

1

1
1
1
1
2
1
1
1

1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

PLFY- · VKM-A.UK

3
1
2
2
1
1

1
1
1
1
2
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

MF

C

TB2

I.B
I.B
I.B
I.B

FUSE

A.B
P.B

TH21
TB15

TB5

DS

LEV

DP

TH23

TH22

(PART OF GRILLE)

(PART OF BOARD)

MOTOR MOUNT
FAN MOTOR
LEG
LEG
NUT/WASHER/CAP
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
DRAIN PAN
CORNER SUPPORT(2)
ADDRESS CABLE
CORNER SUPPORT(1)
PANEL HOOKS
FAN MOTOR CAPACITOR
POWER SUPPLY TERMINAL BLOCK
B.BOX PLATE ASSY
INDOOR CONTROLLER BOARD
INDOOR CONTROLLER BOARD
INDOOR CONTROLLER BOARD
INDOOR CONTROLLER BOARD
FUSE
ADDRESS BOARD
POWER BOARD
ELECTRICAL PARTS COVER
FAN GUARD
BELL MOUTH
ROOM TEMPERATURE THERMISTOR
REMOTE CONTROLLER TERMINAL BLOCK
TRANSMISSION TERMINAL BLOCK
CORNER SUPPORT(3)
VA COVER ASSY
CORNER SUPPORT(4)
DRAIN PLUG
SENSOR HOLDER
DRAIN SENSOR
LINEAR EXPANSION VALVE
DRAIN PUMP
GAS PIPE THERMISTOR
DRAIN SOCKET
LIQUID PIPE THERMISTOR
TURBO FAN
INNER COVER
BASE

PA1-30VF

2.5µF 400V
(L, N, ;)

250V 6.3A

P2 (1,2)
(M1, M2, S)

No.

Part No. Part Name Specification

Q'ty/set Price

Unit

Amount

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

P32 P40 P50

P63
S70 001 133
S70 E00 762
S70 100 130
S70 101 130
S70 001 097
S70 12B 480
S70 14B 480
S70 15B 480
S70 A00 529
S70 002 660
S70 E02 304
S70 001 660
S70 001 099
S70 29H 255
S70 521 716
S70 001 656
S70 080 310
S70 090 310
S70 100 310
S70 110 310
S70 001 239
S70 05B 294
S70 B02 313
S70 003 501
S70 A00 675
S70 002 502
S70 E10 202
S70 512 716
S70 B02 716
S70 003 660
S70 001 657
S70 004 660
S70 A48 524
S70 006 533
S70 31K 266
S70 12A 401
S70 55K 355
S70 060 202
S70 29H 523
S70 12B 202
S70 41N 114
S70 001 659
S70 002 687

23

10

OPTIONAL PARTS

10-1. Multi function casement

Part No. PAC-SE21TM-E

10-2. Air outlet shutter plate

Part No. PAC-SE14SP-E

10-3. High efficiency filter (PAC-SE21TM-E is required in using this optional part.)

Part No. PAC-SE13KF-E

10-4. Wide panel

Part No. PAC-SE06WP-E

10-5. Space panel

Part No. PAC-SE01AS-E

HEAD OFFICE : MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI,CHIYODA-KU TOKYO 100-8310, JAPAN

cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Jul. 2001. No. OC259 250
Made in Japan

New publication, effective Jul. 2001
Specifications subject to change without notice