Mitsubishi PKFY-P32VGM, PKFY-P40VGM, PKFY-P50VGM Service Manual

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>

PKFY-P32VGM
PKFY-P40VGM
PKFY-P50VGM

No. OC179

1998

[ Model names ]

Wall Mounted

Series PKFY

Indoor unit

R407C/R22

[ Service Ref. ]

PKFY-P32VGM
PKFY-P40VGM
PKFY-P50VGM

2

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 refrigerator oil in the existing piping contains a large amount of chlorine which may cause the
refrigerator oil 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 refrigerator oil
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 refrigerator oil 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 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.

3

[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.

Gravimeter

Unit

[1] Service tools

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.

4

PART NAMES AND FUNCTIIONS

2

● Indoor Unit

PKFY-P32VGM
PKFY-P40VGM
PKFY-P50VGM

● Remote controller [PAR-F25MA]

● Once the controls are set, the same operation mode can be repeated by simply pressiry the on / off button.

TIMER button

This switches between continuous

operation and the timer operation

AIR SPEED button

The sets the ventilation fan speed.

● Operation buttons

TIME SETTING button

This sets or switches the current
time, start time and stop time.

OPERATION SWITCH button

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

TEMP ADJUSTMENT button

This sets the room temperature. The
temperature setting can be
performed in 1°C units.

Setting range :

Cooler 19°C to 30°C
Heater 17°C to 28°C

CHECK-TEST RUN button

Only press this button to perform an
inspection check or test operation.
Do not use it for nomal operation

FILTER button

This resets the filter service
indication display

AIR DIRECTION button

This adjusts the vertical angle of the

ventilation.

ON/OFF button

This switches between the operation

and stop modes each time it is
pressed. The lamp on this button
lights during operation.

The model name of the remote
controller is indicated.

LOUVER button

This switches the horizontal fan
motion ON and OFF.

(This button does not operate in this
model.)

Air intake

Air intake gril

Filter

Air outlet

Guide vane

Auto vane

5

Caution

● Only the Power display lights when the unit is stopped and power 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 i TEMP button do not operate.

● “NOT AVAILABLE” is displayed when the Air speed button and the Louver 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 “ HO ” is displayed on the room temperature indication (For max.
2 minutes).Please wait until this “ HO ” indication disapear 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 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

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.

POWER display

This display lights when the filter
need to be cleaned.

SET TEMPERATURE display

This displays the selected setting

temperature.

CLOCK display

The current time , start time and stop

time can be displayed in tensecond
intervals by pressing the time switch
button. The start time or stop time is
always displayed during the timer
operation.

FAN SPEED display

The selected fan speed is displayed.

● 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.

display

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

CHECK MODE

TEST RUN

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.

Operation lamp

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

6

3

SPECIFICATIONS

3-1 Specification

12 - 11 - 10 - 9

15.88 <5/8">

9.52 <3/8">

43 - 40 - 37 - 34

Power

consumption

Current

Type ✕ No.

Air flow w2

External stafic pressure

Fan motor output

Item

Power source

Cooling capacity

Heating capacity

Exterior <munsell symbol>

Dimensions

Heat exchanger

Fan

Air filter

Refrigerant

Pipe dimensions

Drain pipe dimension

Noise level w2

Product weight

Unit

V · Hz

kcal/h

kcal/h

kW

kW

A

A

—

mm

mm

mm

—

—

k/min

Pa

kW

—

[mm

[mm

[mm

dB (A)

kg

Cooling

Heating

Cooling

Heating

Height

Width

Depth

Gas side

Liquid side

PKFY-P32VGM

3150

3550

PKFY-P40VGM

4000

4500

Single phase 220-240V 50Hz

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)

Lineflow fan ✕ 1

0

0.03

PP Honey comb

Outer dimeter 20 <PVC pipe VP-20 connectable>

16

Electric

characteristic

PKFY-P50VGM

5000

5600

11.5 - 10.5 - 9.5 - 8

12.7 <1/2">

6.35 <1/4">

41 - 38 - 36 - 33

Note : w1. Rating conditions

Cooling : Indoor 27°C DB. 19.5°C WB

Outdoor 35°C DB. 24°C WB

Heating : Indoor 21°C DB.

Outdoor 7°C DB. 6°C WB

W2. Air flow and the noise level are indicated as High - Middium1 - Middium2 - Low .

7

3-2 Electrical parts specifications

Transformer

Room temperature thermistor

Liquid pipe thermistor

Gas pipe thermistor

Fuse
(Indoor controller board)

Fan motor
(with inner-thermostat)

Fan motor capacitor

Vane motor

Linear expansion valve

Power supply terminal block

Transmission terminal block

Symbol

T

TH21

TH22

TH23

FUSE

MF

C1

MV

LEV

TB2

TB5

PKFY-P32VGM

PKFY-P40VGM

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

Resistance

0$C/15k1, 10$C/9.6k1, 20$C/6.3k1, 25$C/5.4k1, 30$C/4.3k1, 40$C/3.0k1

250V 6.3A

PM4V30-K 220-240V/220V , 50/60Hz

4 pole Output 30W

OFF 125(5;

2.0+F 440V

MP 35 EA DC12V

DC12V Stepping motor drive

Port dimension [3.2 (0 ~ 2000pulse)

(L, N, ;) 330V 30A

(M1, M2, S) 250V 20A

Model

Parts name

PKFY-P50VGM

Inner-thermostat

8

OUTLINES AND DIMENSIONS4

Unit : mm

PKFY- P32VGM
PKFY- P40VGM
PKFY- P50VGM

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

R

52.5

R

52.5

Unit center

Right side

Allowing clearances

Front view

W1 Sleeves are available on the market.

W2 This size shows the lower end of through hole.

[90 ~ [100

[75 ~ [80

[90

[75

Through holeSleeve W1

50

32 , 40

Model

Details of installation plate

14 - [14 hole

for bolts

Left-rear

piping hole

Knock out hole for

left-rear piping

Less than 130

50 or more 150 or more

180 or more

30 or more

425

420

170

190

210
230

0

322

0355580130

190

230

272

310

0

35

95

150

205

260

320

345

495

20

75

135

190

245

300

360

405

495

32

0

Knock out hole for right piping

Refrigerant pipe.Drain pipe.

Wiring hole

Gas pipe

Liquid pipe

Address board

Terminal block for

power supply

Terminal block for

remote control

Filter grip

21

21

Knock out hole for under piping

Refrigerant piping.Drain pipe.

Wiring hole

Service panel

(Power supply access)

5/8F

Gas pipe

1/2F

Liquid pipe

3/8F

1/4F

50

32 , 40

Model

( Flexible hose total length 800 )

( Right side piping

installation )

( Left side piping

installation )

Drain pipe (VP-20)

(Front view ( to open the grille ))

12 - Louvers ( manual )

Air outlet

(Lower side)

Auto vane

(Left side)

(Front view)

Air intake

Air intake

Air intake

Air intake

Knock out hole for left piping

Refrigerant pipe.Drain pipe.Wiring hole.

(Right side)

35

700 153

549 86

481 54

31

280

80

60

70

245

50

395400

190

60

70 35

79

160 40

705 235

Less than 15

198

70

245

60

235

53

340

715 225

340 80 280 233

990

9

5

WIRING DIAGRAM

PKFY-P32VGM , PKFY-P40VGM , PKFY-P50VGM

ÇO

PIN

BLU

YLW

ORN

RED

BRN

SW3

109876

ON

OFF

12345

SW2

ON

OFF

123456

P32VGM

Models

ON

OFF

123456

P40VGM

109876

ON

OFF

12345

Models SW2

P50VGM

ON

OFF

123456 54321

OFF

ON

678910

SW3

< W1 >

See fig: W1

ORN

BLU

RED

BRN

WHT

YLW

(RED)

CN50

DRAIN

CN29

GAS

(BLK)

CN21

LIQUID

(WHT) (RED)

CN20

INTAKE

N

TB2

L

GRN/YLW

~ 220-240V 50Hz

POWER SUPPLY

PULL BOX

BREAKER(15A)

FUSE(15A)

TO NEXT INDOOR UNIT

BLU
BLU

S(SHIELD)

M1

M2

REMOTE CONTROLLER
DC24-30V

{

BC CONTROLLER

TO OUTDOOR UNIT

TB5

(BLU)

M-NET

CN2M

AC220-240V
T
AC18.4V

RED
BLU

BLU

BLU

CN52

(WHT)
REMOTE
INDICATION

CN51

CENTRALLY
CONTROL

(WHT)

LEV

(WHT)

CN60

CN32

REMOTO
SWITCH

(WHT)

BLU

RED

FUSE
250V

6.3A

CND

(RED)

CN3T
(RED)

ADDRESS

(RED)

CN42

ADDRESS

(RED)

CN81

(GRN)
VANE

CN6V

RED

WHT

CNT

(WHT)

FAN1

(WHT)

WHT

BLK

RED

3RD
DIGIT

2ND
DIGIT

1ST
DIGIT

CONNEC

(RED)

ADDRESS

CN82

CN43

(RED)

ADDRESS

240V220V

SW5

SWC

CN26

4

1

135151

4

32

X4

TH22

LED5

LED2

LED1

LED3LED4

0N

SW4

1

4

1

0N

1234567891023456

SW3SW2

ON

OFF

12345678910

SW1

SW12 SW11

A.B

00

F.C

HA

CN41

6

ZNR

X4

SW14

0

0FF

MV

8

0FF

LEV

TH23 TH21

(WHT)

I.B

C1

1.At servicing for outdoor unit,always follow the wiring diagram of outdoor unit.

2.Symbol[S] of TB5 is the shield wire connection.

3.Symbols used in wiring diagram above are, :terminal block, :connecter.

4.The setting of the SW2 dip switches differs in the capacity for the detail,see the table below.

5.Please set the switch SW5 according to the power supply voltare.
Set SW5 to 240V side when the power supply is 230 and 240 volts.
When the power supply is 220 volts, set SW5 to 220V side.

21

12

123456

123412345678561234

4
3
2
1

8
7
6
5
4
3
2
1

1221

12345

13

31

1
2

31

513

132

MF

Note

-TION No.

PKFY-

PKFY-

PKFY-

Mode selection

A.B

SW12

SW11

SW1

SW14

SW5

SWC Option selector

Connection No.

Address setting 2nd digit

Address setting 1st digit

Voltage selection

Switch

Address board

Transmission

Power supply

(0;/15T,25;/5.4T)
Liquid Pipe temperature
(0;/15T,25;/5.4T)
Gas Pipe temperature
(0;/15T,25;/5.4T)

Transformer

Fan motor (with inner thermostat)

Capacitor (fan motor)

Room temperature

TH22

TH23

C1

MF

T

TH21

Thermistor

TB2
TB5
LEV

block

Terminal

Linear expansion valve

MV

Vane motor

Symbol Name Symbol NameNameSymbol

F.C Fan phase control

Fuse (6.3A)FUSE

I.B

ZNR
X4

SW3
SW4

SW2

CN52

CN51

CN41

CN32

Indoor controller board

Connector

Aux.Relay (Fan motor)

Varistor

Mode selection

Capacity cord

Remote indication

Centrally control

Remote switch
HA terminal-A

Switch

Model selection

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

Flare connection

PKFY-P32VGM
PKFY-P40VGM
PKFY-P50VGM

Gas pipe

PKFY-P32VGM, PKFY-P40VGM

{12.7 <1/2F>

Liquid pipe

{6.35 <1/4F>

Capacity

Item

Refrigeration pipe size (Flare connection size)

PKFY-P50VGM

[15.88<5/8F>

[9.52<3/8F>

11

7

TROUBLE SHOOTING

7-1 How to check PKFY-P32VGM , PKFY-P40VGM , PKFY-P50VGM

Room temperature
thermistor (TH21)

Liquid pipe
thermistor (TH22)

Gas pipe thermistor
(TH23)

Trans

Vane motor

Fan motor

Linear expansion
valve

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

Disconnect the connector then measure the resistance with the tester

Measure the resistance between the terminals using the tester.
(Surrounding temperature 20°C~30°C)

Disconnect the connector then measure the resistance with the tester.
(Surrounding temperatuer 20°C)

Normal

4.3k'~9.6k'

Abnormal

Open or short

Normal Abnormal

186' ~ 214'

Open or short

CNT(1)-(3)

CN3T(1)-(3)

Normal Abnormal

Open or short

Motor terminal or

relay connector

Normal Abnormal

Red - Black 141.21

Open or short

White - Black 131.51

Normal

(1)-(5)

White-Red

150' ±10%

Abnormal

Open or short

(2)-(6)

Yellow-

Blown

(3)-(5)

Orange-Red

(4)-(6)

Blue-Brown

Parts name Check method

Measure the resistance between the terminals using the tester.

(Surrounding temperatuer 20°C)

M

Blue

Brown

Yellow

Orange

Red

Pink

4

5

2

3

6

1

Red - Pink

Connector

Brown - Yellow

Brown - Blue

Red - Orange

About 70'

About 1'

CNT T CN3T

Red Blue

1
2
3

White

Relay connector

1

2

3

Blue

Red

White

Black

1
2
3

1

2

3

LEV

Protector

White
Yellow

Orange
Blue

Red
Brown

CN60

1
2
3
4
5
6

12

<Thermistor Characteristic graph>

Room temperature thermistor(TH21)
Liquid pipe thermistor (TH22)
Gas pipe thermistor (TH23)
Drain sensor(THD)

Thermistor R

0=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

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.

1

273+t

1

273

<Connection between the indoor controller board and the linear expasion valve>

< Thermistor for lower temperature >

50

40

30

Resistance (K")

20

10

0

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

Linear expansion valve

4

M

6

2

5

White

1

Red

3

Orange

Blue

Brown

Yellow

[4

[3

[2

[1

Brown

Red

Blue

Orange

Yellow

White

Connector(CN60)

Controller board

DC12V

6

5

4

3

2

1

Drive circuit

[4

[3

[2

[1

13

Output

(Phase)

Output

{1

1

ON

{2

ON

{3

OFF

{4

OFF

2

OFF

ON

ON

OFF

3

OFF

OFF

ON

ON

4

ON

OFF

OFF

ON

<Output pulse signal and the valve operation>

➁

Linear expansion valve operation

➂

Trouble shooting

D

A

E

B

C

Open

Extra tightning (80~100pulse)

Pulse number

2000 pulse
Opening a valve
all the way

Close

Valve position (capacity)

Symptom

Check points

Operation circuit

failure of the micro
processor.

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 turned on. If there is LED with lights on or
lights off, it means the operation circuit is abnormal.

Countermeasures

Exchange the indoor
controller board at drive
circuit failure.

Linear expansion

valve mechanism is
locked.

Valve doesn't close

completely
(thermistor leaking).

Wrong connection of

the connector or
contact failure.

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

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 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.

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
connector.

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.

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 150'+10%.

Short or breakage of

the motor coil of the
linear expansion
valve.

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 expasion 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 locks and vibrates.

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

be send till it goes to

A

point in order to define the valve

position.

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 Aor when the valve is locked,

more noise can be heard than normal situation.

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

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

LED1T

6
5
4
3
2
1

14

7-2. FUNCTION OF DIPSWITCH
PKFY-P32VGM , PKFY-P40VGM , PKFY-P50VGM

1
2
3
4
5
6
7
8
9

10

1~6

1
2
3
4
5
6
7
8
9

10

1~4

Thermistor<Intake temperature
detection>position

ON OFF

Filter crogging detection Provided Not provided

Filter life 2500hr 100hr

Air intake Effective Not effective

Remote indication switching Thermostat ON signal indication Fan output indication

Humidifier control

Always operated while the heating mode w1Operated depends on the condition

w2

Air flow set in case of Fix to LOW w3 Fix to EXTRA LOW w3

Heat thermostat OFF

Depends on setting Remote controller

w3 Depends on SW1-7

Auto restart Effective Not effective

Power ON/OFF Effective Not effective

Heat pump/Cooling only Cooling only models Heat pump models

Louver Available Not available

Vane Available Not available

Vane swing function Available Not available

Vane holizontal angle Second setting First setting

Vane cooling limit angle setting

w4 Horizontal angle Down A,B,C

Effective Not effective

Heater 4deg up Not effective Effective

Target Superheat setting

w5 9degrees 6degrees

Target Subcool setting 15degrees 10degrees

ON

OFF

1234

ON

OFF

12345678910

ON

OFF

123456

MODELS SW2 MODELS SW2 MODELS SW2

PKFY-

P32VGM

PKFY-

P40VGM

Address board

<At delivery>

Indoor controller board

Indoor controller board

Indoor controller board

<At delivery>

SW4

Unit

Selection

SW3

Function

Selection

SW2

Capacity

code

setting

SW1

Mode

Selection

Switch Pole

Function

Operation by switch

Remarks

Bult-in remote controller

Indoor unit

Indoor linear expansion
valve opening

NOTE:

w1 At Heating mode, fan

operating.

w2 At Heating mode, operat-

ing heat thermostat ON.

w3 SW1-7=OFF, SW1-8=ON

→Setting air flow.
SW1-7=ON, SW1-8=ON
→Indoor fan stop.

Set while the unit is off.

<At delivery>

Set for each capacity.

Set while the unit is off.

NOTE:

w4 At cooling mode, each

angle can be used only 1
hour.

w5 sw3-9 setting

PKFY-P32VGM = OFF
PKFY-P40VGM = ON
PKFY-P50VGM = OFF

Set while the unit is off.

PKFY-

P50VGM

ON

OFF

123456

ON

OFF

123456

ON

OFF

12345678910

<At delivery>

ON

OFF

1234

15

Address board

Address board

Operation by switchSwitch Pole Remarks

<At delivery>

<At delivery>

SW11
1st digit
address

setting

SW12

2nd degit

address

setting

Rotary switch

SW14

Connect

ion No.

setting

Rotary switch

Address setting should be done when network
remote controller (PAR-F25MA) is being used.

This is the switch to be used when the indoor
unit is operated with R2, R3 series outdoor
unit as a set.

220V 240V

220V 240V

Address board

<At delivery>

2

SW/5

Voltage

Selection

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.

Address can be set while the
unit is stopped.

10 1

SW12

0

1

9

2

8

3

7

4

6

5

SW14

0

F

E

D

C

B

A

9

SW11

1

2

3

4

5

6

7

8

0

1

9

8

7

6

5

2

3

4

SW12

SW11

0

9

8

7

6

0

1

5

1

9

2

8

3

7

4

6

5

2

3

4

SW14

0

1

2

F

3

E

4

D

5

C

6

B

7

A

8

9

16

8

DISASSEMBLY PROCEDURE

PKFY-P40VGM

OPERATION PROCEDURE

PHOTOS & ILLUSTRATION

1 REMOVE THE LOWER SIDE OF THE INDOOR UNIT FROM

THE INSTALLATION PLATE.

(1) Remove the left / right corner box of the indoor unit.
(2) Hold and pull down the lower and both ends of the indoor

unit, and remove the ▼ section from the square hole.
(Refer to the figure 2.1)
Or remove the front panel and push the ▼ section down
by using alankey ,etc. from the front side.
(Refer to the figure 2.2).

(3) Unhook the top of the indoor unit from the back plate catch.

2 REMOVING THE FRONT PANEL.

(1) Open the front grille.
(2) Remove the terminal block cover with a screw.
(3) Remove the screw 3caps then remove the set 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 Pulling up the hook of the
controller case.
w To smooth works, hang the side hooks of the electrical

parts box on the hook of the motor cover.
(see the photo 3)

(Figure 1)

(Figuer2.1)

(Figuer 3)

(Photo 1)

(Photo 2)

(Figuer 2.2)

Square hole

Up

Down

Hook

Square hole

Hook

Terminal block cover

Front grille

Front
panel

Set screw

Set screw

Electrical parts
box

Set screw

Motor cover

Electrical parts
box hook w

(Photo 3)

Hook

Electrical parts box

Controller case

Indoor control
p.c.board

17

OPERATION PROCEDURE

PHOTOS & ILLUSTRATION

4 REMOVING THE VANE MOTOR

(1) Disconnect the connector CN6V on the indoor controller

board.

(2) Remove the 2screws of the vane motor, disconnect the

lead wire and remove the vane motor from the shaft.

(Photo 4)

(Photo 5)

(Photo 6)

(Photo 7)

(Photo 8)

7.REMOVING THE ELECTRICAL PARTS BOX

(1) Remove the terminal block cover.
(2) Remove the front panel.(see the photo 1)
(3) Disconnect the vane motor connector.
(4) Disconnect the fan motor connector from the fan motor.
(5) Remove the liquid / gas pipe thermistor.(see the photo 5)
(6) Remove the electrical parts box (2screws).

Nozzle
assemble

Set screws

Lead wire

Van motor

5.REMOVING THE THERMISTOR

(1) Removing the room thermistor TH21.

1Disconnect the connector CN20<red> on the indoor

controller board.

2Remove the room thermistor from the holder.

(2) Removing the liquid pipe thermistor TH22.

1Disconnect the connector CN21<white> on indoor con-

troller board.

2Remove the liquid pipe thermistor with set to the pipe.

(3) Removing the gas pipe thermistor TH23.

1Disconnect the connector CN29<blak> on hte indoor con-

troller board.

2Remove the gas pipe thermistor with set to the pipe.

Electrical
parts box

Liquid
thermistor

Room
thermistor

Gas pipe
thermistor

6.REMOVEING 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 the drain hose out from the nozzle assemble.
(5) Unhook the hook of the lower nozzle assemble and

pull the nozzle assemble toward you,then remove the

nozzle assemble by sliding it down.

Nozzle assemble

Hook

Drain hose

Corner cover

Liquid pipe
thermistor

Fan motor connector

Vane motor
connector

Electrical
parts box

8.REMOVING THE FAN MOTOR.

(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 the nozzle assemble.(see the photo 6)
(5) Remove the fan motor leg fixing 3screws.
(6) Unscrew the set screws using by alankey and remove it by

sliding the fan motor to right.

(7) Remove the 4screws and remove the motor cover from the

fan motor leg.

(Photo 9)

screws

Set
screw

Fan motor

Motor cover

motor
leg

18

9 . REMOVING THE LINE FLOW FAN

(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 the nozzle assembly.(see the photo 6)
(5) Remove the fan motor.(see the photo 8)
(6) Remove the pipe fixture with 2screws.(see the photo11)
(7) Remove the left / right screws of the heat exchanger and

pull the left-hand side up.

(8) Remove the 2screws by sliding it towerd you remove the

fixture(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 exchenger

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 the corner box.
(5) Remove the nozzle assemble.(see the photo 6)
(6) Remove the 2screws and the pipe fixture.
(7) Remove the 2screws and heat exchanger.

(Photo 11)

Heat exchenger

Set screw

Pipe fixture

Set screws

19

PKFY-P32VGM
PKFY-P40VGM STRUCTURAL PARTS
PKFY-P50VGM

1
2
3
4
5
6
7
8

9
10
11
12
13

FRONT PANEL
AIR FILTER
SCREW CAP
CORNER COVER
CORNER COVER
BOX ASSEMBLY
BACK PLATE
UNDER COVER
FRONT GRILLE
ADDRESS BOARD
ADDRESS CABLE
VANE SLEEVE
AUTO VANE

1
2
3
1
1
1
1
1
1
1
1
1
1

No.

Parts No.

Parts Name

Specifications

PKFY-

P32/P40/P50VGM

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom­mended

Q'ty

Unit

Amount

Price

R01 89Y 651
R01 A16 500
R01 07Y 096
R01 09Y 658
R01 07Y 658
R01 07Y 635
R01 07Y 808
R01 07Y 623
R01 07Y 691
T7W B01 294
T7W 85Y 304
R01 07Y 092
R01 07Y 002

PARTS LIST

9

9

3

4

2

11

8

5

7

6

1

10

13

12

20

PKFY-P32VGM
PKFY-P40VGM ELECTRICAL PARTS
PKFY-P50VGM

FILTER

CHECK MODE

TEST RUN

241

21

29

22

T7W A01 762
R01 07Y 114
R01 07Y 105
R01 07Y 106
R01 005 103
R01 07Y 102
R01 07Y 130
R01 07Y 530
R01 89Y 202
R01 09Y 038
R01 89Y 223
R01 07Y 527
T7W E02 310
T7W 520 239
R01 07Y 524
T7W 521 716
T7W E00 716
R01 588 255
R01 KL5 202
T7W A00 260
R01 A03 480
R01 A04 480
R01 A05 480
T7W B00 713
T7W A00 305
R01 07Y 135
R01 07Y 038
R01 07Y 059
R01 18J 202
T7W A00 675
R01 22A 401

No.

Parts No. Parts Name

Specifications

Remarks

(Drawing No.)

Wiring

Diagram

Symbo

l

Recom-

mended

Q'ty

Unit

Amount

PKFY-

P40VGMP32VGM

Price

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

FAN MOTOR
LINE FLOW FAN
RUBBER MOUNT
BEARING SUPPORT
SLEEVE BEARING
BEALING MOUNT
MOTOR SUPPORT
NOZZLE ASSY
GAS PIPE THERMISTOR
GUIDE VANE
VANE MOTOR
DRAIN HOSE
CONTROLLER BOARD
FUSE
DRAIN PLAG
TERMINAL BLOCK
TERMINAL BLOCK
RUN CAPACITOR 2

LIQUID PIPE THERMISTOR
POWER TRANS
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
REMOCON
CORD REMOCON
MOTOR COVER
GUIDE VANE
ARM
ROOM THERMISTOR
FAN GUARD
LINEAR EXPANSION VALVE

1
1
2
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1

1
1
1

10

2
1
1
1

1
1
2
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1

1
1
1
1

10

2
1
1
1

MF

TH23

MV

I.B

F1<I.B>

TB2
TB5

C1

TH22

T

TH21

LEV

P50VGM

1
1
2
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1

1

1
1
1

10

2
1
1
1

PAR-F25MA
10m

3P

25 11 12

24

1

13

2

3

6

5

4

7

8

10

14

15

17

16

18

Part numbers that are circled are not shown in the figure.

27199

20

26

28

cCopyright 1998 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD.
Issued in Dec. 1998. OC179 1
Issued in Dec. 1998. OC179 357
Printed in Japan

HEAD OFFICE MISTUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO

New publication, effective Dec. 1998
Specifications subject to change without notice