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

SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

/

Series PKFY

<Indoor unit>
[Model names] [Service Ref.]

Wall Mounted

R407C

R22

2001

No. OC250

PKFY-P32VGM-A

PKFY-P40VGM-A

PKFY-P50VGM-A

Indoor unit

PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A

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

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
deterioration of the new unit.

· 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 with keep both ends 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 deterioration.

· 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 deterioration.

2

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.

[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.

3

2

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 Unit

PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A

Air intake

Filter

Air intake grille

Auto vane

Guide vane

Air outlet

● Remote controller [PAR-20MAA]

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

● Operation buttons

4

● 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.

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

CHECK MODE

TEST RUN

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.

5

3

Item

V•Hz

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 W2

Pipe

dimensions

Unit drain pipe size
Noise level W2
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

PKFY-P32VGM-A

PKFY-P40VGM-A PKFY-P50VGM-A

Single phase 220V-230V-240V · 50Hz / 220V · 60Hz

3.6

4.0

4.5

5.0

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)

Linflow fan ✕ 1

0

0.03

Polyethylene sheet

PP honey comb

O.D.20 (PVC pipe VP-20 connectable)

16

5.6

6.3

12-11-10-9

15.88(5/8")

9.52(3/8")

43-40-37-34

11.5-10.5-9.5-8

12.7(1/2")

6.35(1/4")

41-38-36-33

SPECIFICATIONS

3-1. Specification

Note 1. Rating conditions

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

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

Outdoor D.B. 35°C W.B. 24°C
Outdoor D.B. 7°C W.B. 6°C

6

3-2. Electrical parts specifications

Room temperature thermistor

Liquid pipe temperature thermistor

Gas pipe temperature 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

MA remote controller terminal block

Symbol

TH21

TH22

TH23

FUSE

MF

C1

MV

LEV

TB2

TB5

TB15

PKFY-P32VGM-A

PKFY-P40VGM-A

Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.2kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.2kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.2kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ

250V 6.3A

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

4 pole Output 30W

OFF 125±5;

2.0µF 440V

MP 35 EA DC12V

DC12V Stepping motor drive

Port dimension [3.2 (0 ~ 2000pulse)

(L, N, ;) 330V 30A

(M1, M2, S) 250V 20A

(1,2) 250V 10A

Model

Parts name

PKFY-P50VGM-A

Inner-thermostat

7

4 OUTLINES AND DIMENSIONS

Knock out hole for right piping

Refrigerant pipe.Drain pipe.

Wiring hole

Gas pipe

Liquid pipe

Address board

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

449 86

581 54

31

280

80

60

70

245

50

395400

190

60

70 35

160 40

705 235

Less than 15

198

70

245

60

235

53

340

715 225

340 80 280 233

990

79

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 )

R52.5

R52.5

R52.5

R52.5

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

w2

PKFY- P32VGM-A
PKFY- P40VGM-A
PKFY- P50VGM-A

Unit : mm

8

5

(GRN)

LED2

5432

TH22

1

4

1 1234567891023456

6

6

8

LEV

TH21 TH23

0N

SW4

0N

SW3SW2

0FF

0FF

P.B

TRANS

CN2S

DC13.1V

(RED)

AC220v~240V
CNSK

X4

CNDK

CN2D

WHT

ORN
ORN

1

CN41

4

135151

X4

LED1

FAN

F.C

CND

FUSE
250V

6.3A
HA

ZNR

CN51

CN31

I.B

C1

CN3A

DRAIN

{

TB15

1
2

{

MV

CN6V

VANE

(GRN)

ADDRESS

(RED)
CN81

ADDRESS

(RED)

CN42

See fig:w1

REMOTE
INDICATION

CN52

CENTRALLY
CONTROL

(WHT)

(WHT)

LEV

CN60

(WHT)

CN32

REMOTE
SWITCH

(RED)

CN20

INTAKE

CN21

LIQUID

(WHT)

CN29

GAS

(BLK)

CN2M

M-NET

(BLU)

(BLU)

BLU
BLU

(WHT)

(WHT)

(WHT)

BLK

(WHT)

(RED)

(RED)

(WHT)

RED

WHT

BLK

WHT

BLK

PIN

WHT

YLW

YLW

ORN

ORN

BLU

BLU

RED

RED

BRN

BRN

CONTROLLER
DC8.7-13V

TO MA-REMOTE

M1

M2

S(SHIELD)

DC24-30V

BC CONTROLLER

RED

BLU

REMOTE CONTROLLER

TO OUTDOOR UNIT

~/N 220V 60Hz

BREAKER
(15A)

FUSE(15A)

~/N 220-230-240V 50Hz

TO NEXT INDOOR UNIT

PULL BOX

N

L

TB5

TB2

GRN/YLW

BLU

RED

1221 21

432165 87654321 4321

321

MF

213

315

654321

2

1

13

2

1
3

1
2

31

1

2

3

1

2

A.B

SWC

SW5

220V 240V

2ND
DIGIT

CN82

ADDRESS

(RED)

ON

OFF

12345678910

SW1

SW12SW11

3RD
DIGIT

00

1ST
DIGIT

CONNECTION
NO.

SW14

0

ADDRESS

(RED)

CN43

4
3
2
1

8
7
6
5
4
3
2
1

SW3

21

OFF

ON

345678910

PKFY-P50VGM-A

ON

OFF

123456

<w1>

PKFY-P40VGM-A

654321

OFF

ON

654321

OFF

ON

PKFY-P32VGM-A

Models SW2

54321

OFF

1098756

ON

OFF

1234

1098756

ON

OFF

1234

54321

OFF

ON

54321

OFF

ON

ON

SW4

POWER SUPPLY

P.B

Indoor power board

Power supply for MA-Remote controller
on → lamp is lit

Main power supply(Indoor unit:220-240V)
power on → lamp is lit

LED on indoor board for service

Power supply for
MA-Remote controller

Function

Main power supply

Meaning

LED2

LED1

Mark

NameNameName SymbolSymbolSymbol

Option selector

SWC

Linear expansion valve

LEV

Varistor

ZNR

Model selection

Capacity code
Mode selection

Remote indication

Centrally control

Remote switch

I.B

Indoor controller board
Connector

CN32

CN51
CN52

Switch

SW2
SW3
SW4

Voltage selection

Address setting 2nd digit
Connection No.

Address setting 1st digit

Mode selection

Power supply

Vane motor

Switch

Terminal
block

SW5

A.B

SW1

SW11
SW12
SW14

TB2

MV

Capacitor(fan motor)

C1

FUSE (6.3A)

Pipe temperature,detection/Gas

Pipe temperature,detection/Liguid

Room temperature ,detection

Fan phase control

Thermistor

(0°C/15t,25°C/5.4t)

(0°c/15t,25°c/5.4t)

(0°c/15t,25°c/5.4t)

F.C
FUSE

TH21

TH22

TH23

Aux.Relay

Aux.Relay(Fan motor)

X4

Fan motor(with inner thermo)

MF

TB5

Transmission

TB15

MA-remote controller

CN41

HA terminal-A

Circuit board (Address)

(Remote controller wire is non-polar.)

7.

In case of using MA-Remote controller,please connect to TB15.

In case of using M-NET,please connect to TB5.(Transmission line is non-polar.)

6.

Set SW5 to 240V side when the power supply is 230 and 240 volts.

Please set the switch SW5 according to the power supply voltage.

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.

4.

The setting of the SW2 dip switches differs in the capacity
for the detail,refer to the fig:w1.

Note

5.

When the power supply is 220 volts,set SW5 to 220V side.

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

WIRING DIAGRAM

PKFY-P32VGM-A , PKFY-P40VGM-A , PKFY-P50VGM-A

9

6 REFRIGERANT SYSTEM DIAGRAM

Strainer (#50mesh)

Strainer (#100mesh)

Strainer (#100mesh)

Heat exchanger

Room temperature thermistor
TH21

Gas pipe temperature
thermistor TH23

Liquid pipe temperature
thermistor TH22

Linear expansion valve

Gas pipe

Liquid pipe

Flare connection

PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A

Item

Capacity

Gas pipe
Liquid pipe

PKFY-P32VGM-A, PKFY-P40VGM-A

{12.7 (1/2”)

{6.35 (1/4”)

PKFY-P50VGM-A

[15.88(5/8”)

[9.52(3/8”)

10

7

1

3

2

2

3

1

Red

White

Black

Fan

Protector

Orange

Red

White

Blue

Brown

Yellow

3

6

1

5

4

2

M

M

Blue

Brown

Yellow

Orange

Red

Pink

4

5

2

3

6

1

TROUBLE SHOOTING

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

Parts name

Room temperature
thermistor (TH21)

Liquid pipe temperature
thermistor (TH22)

Gas pipe temperature
thermistor (TH23)

Vane motor

Fan motor

Check method

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

Normal

4.3k'~9.6k'

Abnormal

Open or short

(Refer to the next page for a detail.)

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

Connector

Normal Abnormal

Brown - Yellow

Brown - Blue

Red - Orange

186' ~ 214'

Open or short

Red - Pink

Measure the resistance between the terminals using the tester.

(Surrounding temperature 20°C)

Motor terminal or

relay connector

Red - Black 141.2Ω

White - Black 131.5Ω

Normal Abnormal

Open or short

Linear expansion
valve

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

(1)-(5)

White-Red

Normal

(2)-(6)

Yellow-Brown

(3)-(5)

Orange-Red

(4)-(6)

Blue-Brown

Abnormal

Open or short

(Refer to the next

page for a detail.)

150' ±10%

11

<Thermistor Characteristic graph>

Thermistor for
lower temperature

Room temperature thermistor(TH21)
Liquid pipe temperature thermistor (TH22)
Gas pipe temperature 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 lower temperature >

50

40

30

Resistance (K")

20

10

0

-20 -10 0 10 20 30 40 50
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.

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

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

12

<Output pulse signal and the valve operation>

D

A

E

B

C

Open

Extra tightning (80~100pulse)

Pulse number

2000 pulse
Opening a valve
all the way

Close

Valve position (capacity)

6
5
4
3
2
1

LED1T

Liquid pipe
thermistor

Linear
expansion
valve

2

OFF

ON
ON

OFF

Output

3

OFF
OFF

ON
ON

Output

(Phase)

{1
{2
{3
{4

Linear expansion valve operation

➁

1

ON

ON
OFF
OFF

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 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 ⁄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 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 turned 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 150'+10%.

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

13

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 DIPSWITCH
PKFY-P32VGM-A , PKFY-P40VGM-A , PKFY-P50VGM-A

Switch Pole

1
2
3
4

SW1

Mode

Selection

5
6
7
8
9

10

SW2

Capacity

code

1~6

setting

Function

Operation by switch

ON OFF

Thermistor<Intake temperature
detection>position

Filter clogging detection Provided Not provided
Filter cleaning sign 2500hr 100hr
Air intake Effective Not effective
Remote indication switching Thermostat ON signal indication Fan output indication
Humidifier control
Air flow set in case of Fix to LOW w3 Fix to EXTRA LOW w3
Heat thermostat OFF
Auto restart Effective Not effective
Power source ON/OFF Effective Not effective

MODELS SW2 MODELS SW2 MODELS SW2

PKFY-

P32VGM-A

ON

OFF

123456

Built-in remote controller

Always operated while the heating mode

Depends on setting Remote controller

PKFY-

P40VGM-A

ON

OFF

123456

Indoor unit

w1

Operated depends on the condition

w3 Depends on SW1-7

PKFY-

P50VGM-A

ON

OFF

123456

w2

Remarks

Address board

<At delivery>

ON

OFF

NOTE:

12345678910

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.

Indoor controller board

Set while the unit is off.

<At delivery>

Set for each capacity.

SW3

Function

Selection

10

SW4

Unit

1~5

Selection

Heat pump/Cooling only Cooling only models Heat pump models

1

Louver Available Not available

2

Vane Available Not available

3

Vane swing function Available Not available

4

Vane horizontal angle Second setting First setting

5

Vane cooling limit angle setting

6

Indoor linear expansion

7

valve opening

Heater 4deg up Not effective Effective

8

Target Superheat setting

9

Target Sub cool setting 15degrees 10degrees

w4 Horizontal angle Down B,C

Effective Not effective

w5 9degrees 6degrees

ON

OFF

12345

Indoor controller board

Set while the unit is off.

<At delivery>

ON

OFF

NOTE:

12345678910

w4 At cooling mode, each

angle can be used only 1
hour.

w5 sw3-9 setting

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

Indoor controller board

Set while the unit is off.

<At delivery>

ON

OFF

12345

14

Operation by switchSwitch Pole Remarks

220V 240V

220V 240V

SW11

1st digit

address

setting

SW12

2nd digit

address

setting

SW14

Connect

ion No.

setting

SW5

Voltage

Selection

Rotary switch

Rotary switch

2

SW12

0

1

9

2

8

3

7

4

6

5

10 1

SW14

0

F

E

D

C

B

A

9

SW11

8

1

2

3

4

5

6

7

8

Address board

Address can be set while the
unit is stopped.

0

1

9

7

6

5

Address setting should be done when

2

M-NET remote controller is being used.

3

4

<At delivery>

SW12

SW11

0

9

8

7

6

0

1

5

1

9

2

8

3

7

4

6

5

2

3

4

Address board

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

<At delivery>

SW14

0

1

2

F

3

E

4

D

5

C

6

B

7

A

8

9

Address board

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.

<At delivery>

15

8

DISASSEMBLY PROCEDURE

PKFY-P40VGM-A

OPERATION PROCEDURE

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.

(Figure 2.2)

Square hole

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.

Up

Down

PHOTOS & ILLUSTRATION

(Figure 1)

(Figure2.1)

(Figure 3)

Hook

Hook

Square hole

Terminal block cover

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)

(Photo 1)

Front
panel

(Photo 2)

Motor cover

Electrical parts
box hook w

(Photo 3)

Front grille

Set screw

Set screw

Electrical parts
box

Set screw

Indoor control
p.c.board

16

Hook

Controller case

Electrical parts box

OPERATION PROCEDURE

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)

Nozzle
assemble

Van motor

PHOTOS & ILLUSTRATION

Set screws

Lead wire

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<black> on indoor

controller board.

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

6. REMOVING 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.

(Photo 5)

Liquid
thermistor

Room
thermistor

(Photo 6)

Nozzle assemble

Hook

Gas pipe
thermistor

Electrical
parts box

Drain hose

Corner cover

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).

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 7)

Liquid pipe
thermistor

(Photo 8)

Set
screw

Fan motor connector

(Photo 9)

Motor cover

Fan motor

screws

Vane motor
connector

Electrical
parts box

motor
leg

17

OPERATION PROCEDURE

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 toward 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.

PHOTOS & ILLUSTRATION

(Photo10)

Heat exchanger

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)

Set screw

Heat exchanger

Pipe fixture

Set screws

18

9

1
2
3
4
5
6
7
8

9
10
11
12
13

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

No.

Parts No.

Parts Name

Specifications

PKFY-

P32/P40/P50VGM-A

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

Unit

Amount

Price

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

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

A.B

PARTS LIST

STRUCTURAL PARTS
PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A

1

2

13

12

11

10

9

3

19

5

4

6

7

8

ELECTRICAL PARTS

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

No.

Parts No. Parts Name

Specifications

Remarks

(Drawing No.)

Wiring

Diagram

Symbo

l

Recom-

mended

Q'ty

Unit

Amount

PKFY-

P40VGM

-A

P32VGM

-A

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

1
1

1
1
1
1
1
1
1
2

10

4
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
2

10

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

MF

MV

TB2
TB5

TB15

C1

P.B

I.B

FUSE

TH21
TH22
TH23

LEV

P50VGM

-A

1

1

1
1
1
1
1
1
1
2

10

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

3P(L , N ,; )
3P(M1,M2,S)
2P(1,2)

2.0= 440V

250V 6.3A

PAR-20MAA

T7W A01 762
R01 E25 480
R01 E26 480
R01 E27 480
R01 07Y 114
R01 005 103
R01 07Y 102
R01 07Y 106
T7W A00 675
R01 07Y 524
R01 07Y 530
R01 07Y 059
R01 07Y 038
R01 09Y 038
R01 E02 223
R01 07Y 527
R01 07Y 135
R01 07Y 105
T7W 521 716
T7W E00 716
R01 556 246
R01 588 255
R01 E02 313
T7W E10 310
T7W 520 239
R01 E26 202
R01 E28 202
R01 E03 202
R01 07Y 130
R01 E27 401

—

FAN MOTOR
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
LINE FLOW FAN
SLEEVE BEARING
BEARING MOUNT
BEARING SUPPORT
FAN GUARD
DRAIN PLUG
NOZZLE ASSY
ARM
GUIDE VANE
GUIDE VANE
VANE MOTOR
DRAIN HOSE
MOTOR COVER
RUBBER MOUNT
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
RUN CAPACITOR
POWER BOARD
CONTROLLER BOARD
FUSE
ROOM THERMISTOR

LIQUID PIPE THERMISTOR
GAS PIPE THERMISTOR
MOTOR SUPPORT
LINEAR EXPANSION VALVE
REMOTE CONTROLLER

PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A

1

3

4

2

28

27

242526

23

5

6

8

9

10

29

7

11 13 14 15

12

16

1817 20

19

21

22

cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD.
Distributed in Feb. 2001. No.OC250 PDF 810
Made in Japan

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

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