Mitsubishi PKFY-P63VFM-A, PKFY-P100VFM-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. OC251

PKFY-P63VFM-A

PKFY-P100VFM-A

Indoor unit

PKFY-P63VFM-A
PKFY-P100VFM-A

CONTENTS

1. SAFETY PRECAUTION····························2

2. PART NAMES AND FUNCTIONS············4

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

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

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

6. REFRIGERANT SYSTEM DIAGRAM·····11

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

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

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

10. OPTIONAL PARTS ································23

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-P63VFM-A
PKFY-P100VFM-A

Air intake
Room air is suctioned

in here.

Guide vane

Air flow can be changed to horizontally
by moving the Guide vane to the left or
right.

Filter Air intake grille

(Removes dust and dirt from the intake air.)

Auto vane

Air outletAir 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

Input

Current

Type ✕ No.
Air flow High - Low
External static pressure
Fan motor output

Item
Power source
Cooling capacity
Heating capacity

Exterior <munsell symbol>

Dimensions

Heat exchanger

Fan

Insulator
Air filter

Pipe dimensions

Unit drain pipe dimension
Noise level High - Low
Product weight

Unit

[,V,Hz

kW
kW
kW
kW

A
A

—
mm
mm
mm

—

—

k/min

Pa

kW

—

—

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

[mm

dB

kg

Cooling
Heating
Cooling
Heating

Height
Width
Depth

Gas side
Liquid side

PKFY-P63VFM-A

7.1

8.0

0.09

0.09

0.43

0.43

340

1,400

235

20 - 15

0.04

15.88(5/8")

9.52(3/8")

45 - 39

24

PKFY-P100VFM-A

11.2

12.5

0.11

0.11

0.52

0.52

340

1,680

235

28 - 22

0.07

19.05(3/4")

9.52(3/8")

46 - 41

28

Electric

characteristic

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

Plastic , white : <3.4Y 7.7/0.8>

Cross fin(Aluminum plate fin and copper tube)

Lineflow fan ✕ 2

0

Polyethylene sheet

PP Honeycomb fabric

O.D. 20 <PVC pipe VP-20 connectable>

SPECIFICATIONS

3-1. Specification

Note : Rating conditions (JIS B8616)

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

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-P63VFM-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

OFF 130±5;

MP 35 EA DC12V

(L, N, ;) 330V 30A

(M1, M2, S) 250V 20A

(1,2) 250V 10A

Model

Parts name

PKFY-P100VFM-A

Inner-thermostat

DC12V Stepping motor drive

Port dimension [5.2 (0 ~ 2,000pulse)

DC12V Stepping motor drive

Port dimension [3.2 (0 ~ 2,000pulse)

D10A4P70MS

220-230-240V / 50Hz , 220V / 60Hz

4pole Output 70w

D094P40MS

220-230-240V / 50Hz, 220V / 60Hz

4pole Output 40w

2.0= 440V

3.0= 440V

7

4 OUTLINES AND DIMENSIONS

235
45

235
45

235
45

235

62.5

13

58
42

340

197

Top

Front

Right side

Left side

1400

1090

Air intake

235

C

Knock out hole for right piping

Refrigerant pipe. Drain pipe

Knock out hole

for left piping

Drain hose for

left-hand side piping

Drain hose

Lower side

Auto vane

(Gas pipe)

Drain hose

Bolt

Gas pipe

15 or less

(Liquid pipe)

Liquid pipe 9.52(3/8F)

Gas pipe 15.88(5/8F)

Liquid pipe

A

30

32

39

98

37

74

4 39

100

30

37

74

4

2980

280

3030

18430

60

10

39

37

65

100

A B C

Knock out hole for piping

25

1110

183

240

B

1120

552

55

120

107

111

Air outlet

552

Air outlet

Change vane (manual)

Under panel

Removable at left-hand

side piping

Knock out hole for under-piping

Refrigerant pipe. Drain pipe

Rear piping opening

Range for left rear piping opening

12-ø6 hole for

tapping screw

66-ø6 hole for

tapping screw

Wall fixture

Unit center

32-ø12 hole for bolt

225

18

18

91

900

990

455

285

245

19

240 280 314

610

90

Drainage range

on left-hand side

Drainage range

on right-hand side

10 91=(910)

180

PKFY-P63VFM-A

Unit : mm

8

45

235

45

235

45

235

45

235 235

62.5

13

58
42

340

197

Top

Front

Right side

Left side

1680

1370

Air intake

235

C

Knock out hole for right piping

Knock out hole for left piping

Drain hose for left-hand side piping

Drain hose

Drain hose

Lower side

Auto vane

(Gas pipe)

Bolt

Gas pipe

15 or less

(Liquid pipe)

Gas pipe 19.05(3/4F)

Liquid pipe 9.52(3/8F)

Liquid pipe

A

30

32

39

98

37

74

4 39

100

30

37

74

4

2980

280

3030

18430

60

10

39

37

65

100

A B C

Knock out hole for wiring

25

1110

183

240

B

1400

55

120

102

111

694

Air outlet

694

Air outlet

Change vane (manual)

Under panel

(Removable at left-hand side piping)

Knock out hole for under-piping

Refrigerant pipe. Drain pipe

Rear piping opening

Range for left rear piping openingRange for left rear piping opening

12-ø6 hole for tapping screw

84-ø6 hole for

tapping screw

Wall fixture

Unit out line

Unit center

41-ø12 hole for bolt

295 225

18

18

91

900

1270

595

285

245

19

240 280 314

750

90

Drainage range

on right-hand side

13 91=(1183)

180

Drainage range

on left-hand side

PKFY-P100VFM-A

Unit : mm

9

5

(GRN)

(BLU)

DS (OPTION)

(WHT)

DRAIN

CN31

(OPTION)

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

X1

X4

CNDK

CN2D

WHT

ORN
ORN

1

CN41

4

CNP

X1

1 35 15 1

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

DS

I.B

122 1 2 1

4 3 2 16 5 8 7 6 5 4 3 2 1 4 3 2 1

3 2 1

MF

213

31 5

6 5 4 3 2 1

2

1

1 3

2

1
3

DP

1 3

1
2

31

1

2

3

1

2

123

A.B

SWC

SW5

220V 240V

2ND
DIGIT

CN82

ADDRESS

(RED)

ON

OFF

12345678910

SW1

SW12SW11

3RD
DIGIT

0 0

1ST
DIGIT

CONNECTION
NO.

SW14

0

ADDRESS

(RED)

CN43

4
3
2
1

8
7
6
5
4
3
2
1

SW3

<w1>

PKFY-P100VFM-A

654321

OFF

ON

654321

OFF

ON

PKFY-P63VFM-A

Models SW2

<w2>

109875 6

ON

OFF

1 2 3 4

109875 6

ON

OFF

1 2 3 4

54321

OFF

ON

54321

OFF

ON

SW4

POWER SUPPLY

w2

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

CNP

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/Liquid

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

Fan motor

X4

X1

Drain-up machine

Fan motor (with inner thermo)

MF

Drain-up machine

Drain sensor (OPTION)

Drain-up machine (OPTION)

DS

DP

TB5

Transmission

TB15

MA-remote controller

CN41

HA terminal-A

Circuit board

(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-P63VFM-A , PKFY-P100VFM-A

10

REFRIGERANT SYSTEM DIAGRAM6

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-P63VFM-A
PKFY-P100VFM-A

Item

Gas pipe
Liquid pipe

Capacity

PKFY-P63VFM-A

{15.88 (5/8”)

{9.52 (3/8”)

PKFY-P100VFM-A

[19.05(3/4”)

[9.52(3/8”)

11

7

Parts name Check points

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

Disconnect the connector then measure the resistance valve using a tester.
(Surrounding temperature 20:)

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

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

Linear expansion
valve

Drain-up machine
(Optional)

Drain sensor
(Optional)

(Refer to the next page for a detail.)

Room temperature
thermistor (TH21)

Liquid pipe temperature
thermistor (TH22)

Gas pipe temperature
thermistor (TH23)

1
3

1
2
3

Normal

4.3k"~9.6k"

Abnormal

Open or short

Abnormal

Open or short

Normal

0.6k"~6.0k"

Abnormal

Open or short

Normal

150k" i10%

(1)-(5)

White-Red

(2)-(6)

Yellow-Brown

(3)-(5)

Orange-Red

(4)-(6)

Blue-Brown

Normal Abnormal

56"~96" Open or short

Orange

Red

White

Blue

Brown

Yellow

3

6

1

5

4

2

M

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

Fan motor

1

3

3

2

5

1

Red

White

Black

FAN

Protector

PKFY-P63VFM-A

99.5" i10%

103.5" i10%

PKFY-P100VFM-A

62.6" i10%

74.0" i10%

Abnormal

Open or short

Red-Black

White-Black

Motor terminal or

Relay connector

Normal

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

Vane motor

NormalConnector Abnormal

186~214" Open or short

Brown — Yellow
Brown — Blue
Red — Orange
Red — Pink

(Refer to the next
page for a detail.)

BlueYellow Brown

Orange

Red
Pink

2

3

4

5

6 1

M

TROUBLE SHOOTING

7-1. How to check PKFY-P63VFM-A , PKFY-P100VFM-A

12

<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

13

<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)

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

Ú

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 Ú

E

to ÚAor 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.

LED1T

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

6
5
4
3
2
1

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
PKFY-P63VFM-A , PKFY-P100VFM-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 w3 Depends on SW1-7
Auto restart Effective Not effective
Power source ON/OFF Effective Not effective

MODELS SW2 MODELS SW2

PKFY-

P63VFM-A

ON

OFF

123456

Built-in remote controller

Always operated while
the heating mode

Depends on setting
remote controller

PKFY-

P100VFM-A

ON

OFF

123456

Indoor unit

Operated depends

w1 w2

on the condition

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 model Heat pump model

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 4degrees 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-P63VFM-A= ON
PKFY-P100VFM-A= OFF

Indoor controller board

Set while the unit is off.

<At delivery>

ON

OFF

12345

15

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

1

2

3

4

5

6

7

8

Address board

Address can be set while the
unit is stopped.

0

1

9

8

7

4

6

5

Address setting should be done when M-NET

2

remote controller is being used.

3

<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>

16

8

Metal fixture

Screws

Hanger of indoor unit

Catch of installation plate

Terminal cover

Electrical parts box cover

Connector

Connector

Indoor controller
board

Right side panel

DISASSEMBLY PROCEDURE

PKFY-P63VFM-A

OPERATING PROCEDURE PHOTOS & ILLUSTRATION

1. Removing the lower side of the indoor unit from the instal­lation plate

(1) Remove the 2 screws.

Hang the indoor unit hangers to the catches on the instal­lation plate.

Figure 1

2. Removing the right side panel

(1) Remove the 2 screws of the right side panel:one on the

bottom and the other on the upper right-hand side.
(2) Disconnect the connector from the adapter case.
(3) Sliding the right side panel to the right, pull it out toward

you.

3. Removing the indoor controller board

(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover, and

remove the cover.
(3) Disconnect the connectors on the indoor controller board.
(4) To unhook the catches on the right-hand side of the indoor

controller board, pull the left-hand side toward you and lift

up the cover to the right. Then the indoor controller board

can be removed.

Figure 2

Photo 1

Indoor controller
board

Electrical parts

box cover

Catches

4. Removing the electrical parts box

(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover and

(3) Disconnect the vane motor, the linear expansion valve,

(4) Remove the 2 screws of the electrical parts box.
(5) Disconnect the connector of the fan motor lead wire.(Fan

(6) Remove the electrical parts box.

controller cover, and remove each the cover.

the room temperature thermistor, the liquid pipe temperature

thermistor and the gas pipe temperature thermistor connector

on the indoor controller board.

motor side)

17

Photo 2

Room temperature thermistor

Screws

Electrical parts
box

OPERATING PROCEDURE PHOTOS & ILLUSTRATION

Catch on the left side panel

Catch on

the unit

(7) Remove the indoor controller board case.

Then the Power board and the capacitor can be serviced.

5. Removing the vane motor

(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover, and

remove the terminal cover.

(3) Remove the 2 screws of the vane motor, and remove the

motor from the shaft.

(4) Disconnect the vane motor connector on the indoor con-

troller board.

Photo 3

Power board

Terminal block

Photo 4

Capacitor

Electrical parts box

Indoor controller board

6. Removing the intake grilles

(1) Remove the right side panel.
(2) To remove the left side panel, remove the screw on the

bottom and the screw on the upper left-hand side.
(See Figure 3.)

1. Press up this side of the left side panel to unhook the
catch on the panel from the catch on the unit.

2. Slide the left side panel to the left to remove the panel.

Note: Fix the unit to the metal fixture securely
(3) Remove the air filters.
(4) Hold and press the center cover to remove.
(5) Remove the screws of the grilles.
(6) Pull the lower side of the grille toward you and slide the

upper to the right to remove the grilles.

7. Removing the drain pan

(1) Remove the left and right side panels.
(2) Remove the grilles.
(3) Remove the electrical parts box cover.
(4) Loosen the drain hose band to remove.
(5) Remove the 3 screws of the drain pan, and slide the drain

pan toward you to remove.

Screws

Figure 3

Photo 5

Left side panel

Photo 6

Vane motor

Slide to the
right

Screws for grilles

Drain pan

Screws

Grills

Drain hose
band

Drain hose

18

OPERATING PROCEDURE PHOTOS

8. Removing the lineflow fan and the fan motor

(1) Remove the left and right side panels.
(2) Remove the grilles.
(3) Remove the electrical parts box.
(4) Remove the drain pan.
(5) Loosen the screw that fixes the lineflow fan to the fan

motor. (See Photo 7. )

(6) Remove the 4 screws of the motor fixture, and remove the

fan motor and the motor fixture at a time (See Photo 8.)

(7) Remove the screws of the left and right motor supports,

and remove the motor supports and the fan motor.
(See Photo 9.)

(8) Remove the screw of the center support, and remove the

support. (See Photo 10. )

(9) Remove the 2 screws on the left and right sides of the

heat exchanger, and pull the bearing support toward you.
(See Photo 11.)

(10) Pull the left-hand side of the heat exchanger toward you,

and remove the lineflow fan.

Photo 7

Photo 8

Lineflow fan

Screw

Fan motor

Screw

Fan motor

Photo 11

Heat exchanger

Bearing support

Lineflow fan

Photo 9

Screw

Motor support

Photo 10

Fan motor

Lineflow fan

ScrewCenter support

Motor fixture

Screw

Motor
support

19

9 PARTS LIST

No.

Part No. Part Name

Specification

Wiring

Diagram

Symbol

Recom­mended

Q'ty

Unit

Amount

Q'ty / set

Price

1
2

3

4

5

6

7

8

9

BEARING MOUNT
SLEEVE BEARING
LEFT LINEFLOW FAN
LEFT LINEFLOW FAN
HEAT EXCHANGER
HEAT EXCHANGER
DRAIN PAN
DRAIN PAN
ARM
GUIDE VANE
GUIDE VANE (WITH HANDELE)
AUTO VANE
AUTO VANE
JOINT SHAFT

1
1

1

1

1
4

22

4

2
1

Remarks

(Drawing No.)

R01 Z61 102
R01 005 103
R01 13G 114
R01 17G 114
T7W E81 480
T7W E82 480
T7W E10 529
T7W E11 529

—
—

—
R01 12G 002
R01 16G 002
R01 12G 063

1
1
1

1

1

3

16

4
2

1

PKFY

P63VFM-A

P100VFM-A

(BG25H301H02)
(BG25J821H01)
(BG25J821H02)

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

ELECTRICAL PARTS
PKFY-P63VFM-A
PKFY-P100VFM-A

10

1

37

36

35

38

2

34

3

33

32

31

4

28

30

5
6

29
28

27

7
8

9

26

25

11

8

6

12

7

13

14

20

16

17

15

18

19

20

22

21

23

24

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

No.

Part No. Part Name

10

R01 12G 621

11

R01 KV5 527

12

T7W E03 223

13

T7W E25 202

14

T7W E12 202

15

R01 E02 202

16

T7W E01 294
17
18
19
20

21

—
T7W A14 716
T7W E00 716
R01 18J 246
R01 588 255
R01 576 255

22

T7W E10 310

23

T7W 520 239

24
25
26
27

28

—

—
R01 E02 313

—
R01 12G 105
R01 16G 105
R01 12G 220

29

T7W 571 762

30

—

—

31

32

—
R01 E27 401
T7W E09 401
R01 13G 115

33

R01 17G 115

34
35
36
37
38
39

—
R01 12G 103
R01 KV5 102

—

—
R01 05A 304

Specification

P63VFM-A

CENTER COVER
DRAIN HOSE
VANE MOTOR
GAS PIPE THERMISTOR
ROOM TEMPERATURE THERMISTOR
LIQUID PIPE THERMISTOR
ADDRESS BOARD
TERMINAL COVER
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
FAN MOTOR CAPACITOR
FAN MOTOR CAPACITOR

3P(L,N,;)
3P

(M1,M2,S)

2P(1,2)

2.0+ 440V

3.0+ 440V
INDOOR CONTROLLER BOARD
FUSE

250V 6.3A
CONTROLLER COVER
CONTROLLER CASE
POWER BOARD
MOTOR BAND
RUBBER MOUNT
RUBBER MOUNT
FAN MOTOR
FAN MOTOR

D094P40MS

D10A4P70MS
MOTOR LEG
MOTOR LEG
MOTOR BAND
LINEAR EXPANSION VALVE
LINEAR EXPANSION VALVE
RIGHT LINE FLOW FAN
RIGHT LINE FLOW FAN
CENTER SUPPORT
SLEEVE BEARING
BEARING MOUNT
BEARING BAND
REMOTE CONTROLLER

PAR-20MAA
ADDRESS CABLE

Q'ty / set

PKFY-

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

1
2
1
1
1
1
2

1

1

1
1

1

1
1
1
1
1
1

P100VFM-A

1
1
1
1
1
1
1
1
1
1
1

1
1
2
1
1
1
1

2

1

1
1

1

1
1
1
1
1
1
1

Remarks

(Drawing No.)

(BG02J608G01)

(BG02A648G02)
(BG25N158H04)

(BG02H065H01)

(BG02A534H16)
(RG02A534H17)
(BG02H178H01)

(BG00R259G05)

(BG02L462H02)

Wiring

Diagram

Symbol

MV
TH23
TH21
TH22

A.B

TB2
TB5

TB15

C1
C1
I.B

FUSE

P.B

MF
MF

LEV
LEV

R.B

Recom-

mended

Q'ty

Unit

Price

Amount

21

STRUCTURAL PARTS

No.

Part No. Part Name

Specification

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

Unit

Amount

Q'ty / set

Price

1

2

3

4
5
6
7

8

9

10

11

(BG00A593GN1)
(BG00A593GN2)

1

1

1
5
2
1
1

1

1

1
1

1
1

1

4
2

1
1

1

1

1

Remarks

(Drawing No.)

PKFY-

P63VFM-A

P100VFM-A

R01 12G 662
R01 E01 812
R01 E00 812
R01 12G 811
R01 16G 811
R01 A17 500
R01 12G 691
R01 16G 692
R01 12G 661
R01 12G 808
R01 16G 808
R01 E01 641
R01 E00 641

—
—

R01 12G 523

LEFT SIDE PANEL
UNDER PLATE
UNDER PLATE
NOSE
NOSE
AIR FILTER
INTAKE GRILLE
INTAKE GRILLE
RIGHT SIDE PANEL
BACK PLATE
BACK PLATE
TOP PLATE
TOP PLATE
BOX ASSEMBLY
BOX ASSEMBLY
DRAIN SOCKET

PKFY-P63VFM-A
PKFY-P100VFM-A

1

9

10

5

8

(PKFY-P63VFM-A
Only)

2

3
3

(PKFY-P100VFM-A
Only)

4

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

7

5

6

22

OPTIONAL PARTS10

DRAIN-UP MACHINE

Part No.

PAC-SE89DMA-E

23

HEAD OFFICE : MISTUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI CHIYODU-KU, TOKYO100-8310, JAPAN

cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD.
Distriduted in Mar. 2001. No. OC251 475
Made in Japan

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