Mitsubishi PKFY-P63VFM-A Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES···························2
2. SAFETY PRECAUTION····························3
3. PART NAMES AND FUNCTIONS············5
4. SPECIFICATIONS·····································7
5. OUTLINES AND DIMENSIONS················9
6. WIRING DIAGRAM·································11
7. REFRIGERANT SYSTEM DIAGRAM ····13
8. TROUBLE SHOOTING···························14
9. DISASSEMBLY PROCEDURE···············19
10. PARTS LIST············································22
11. OPTIONAL PARTS ················Back Cover
<Indoor unit>
[Model names] [Service Ref.]
PKFY-P63VFM-A PKFY-P63VFM-A
PKFY-P63VFM-A1
PKFY-P63VFM-A2
PKFY-P100VFM-A PKFY-P100VFM-A
PKFY-P100VFM-A1
PKFY-P100VFM-A2
2003
Wall Mounted
Series PKFY
R407C /R22
SPLIT-TYPE, HEAT PMUP AIR CONDITIONERS
No. OC251
REVISED EDITION-A
Indoor unit
• PKFY-P63VFM-A1, PKFY-P100VFM-A1,
PKFY-P63VFM-A2and PKFY-P100VFM-A2
are added in REVISED EDITION-A.
• Please void OC251,OC270.
OC251-A.qxp 03.3.25 9:51 AM Page 1

2
1 TECHNICAL CHANGES
·PKFY-P63VFM-A ➔PKFY-P63VFM-A1
·PKFY-P100VFM-A ➔PKFY-P100VFM-A1
(CHANGE POINTS)
Change of the service parts.
Refer to 10.PARTS LIST for details.
1. DRAIN PAN shape has changed.
2. NOSE shape has changed.
3. BOX ASSEMBLY shape has changed.
·PKFY-P63VFM-A1➔PKFY-P63VFM-A2
·PKFY-P100VFM-A1➔PKFY-P100VFM-A2
(CHANGE POINTS)
1. DEW PREVENTION HEATER has been added.
Refer to 6.WIRING DIAGRAM for details.
2. BOX ASSEMBLY has changed due to the addition of DEW PREVENTION HEATER.
Refer to 10.PARTS LIST for details.
3. The contents of SPECIFICATIONS have changed.
Due to the addition of DEW PREVENTION HEATER, the values of Input and Current on Electric
characteristic have changed.
Refer to 4.SPECIFICATIONS for details.
4. Optional DRAIN-UP MACHINE (PAC-SE89DMA-E) cannot be installed in the unit.
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3
SAFETY PRECAUTION
2
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.
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4
[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
1Gauge manifold ·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
2Charge hose ·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a or R407C.
5Adapter for reverse flow check. ·Attach on vacuum pump.
6Refrigerant charge base.
7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
8Refrigerant 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.
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5
PART NAMES AND FUNCTIONS
3
● Indoor Unit
PKFY-P63VFM-A PKFY-P63VFM-A1PKFY-P63VFM-A2
PKFY-P100VFM-A PKFY-P100VFM-A1PKFY-P100VFM-A2
Air intake
Room air is suctioned
in here. (Removes dust and dirt from the intake air.)
Filter Air intake grille
Air outletAir outlet
Auto vane
Air flow can be changed to horizontally
by moving the Guide vane to the left or
right.
Guide vane
● Remote controller [PAR-20MAA]
● Once the controls are set, the same operation mode can be repeated by simply pressing the on / off button.
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
● Operation buttons
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6
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.
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.
CHECK display
This indicates when a malfunction
has occurred in the unit which should
be checked.
CLOCK display
The current time , start time and stop
time can be displayed in ten second
intervals by pressing the time switch
button. The start time or stop time is
always displayed during the timer
operation.
●Display
In this display example on the bot-
tom left, a condition where all dis-
play lamps light is shown for expla-
nation purposes although this differs
from actual operation.
Operation lamp
This lamp lights during operation,
goes off when the unit stops and
flashes when a malfunction occurs.
POWER display
This lamp lights when electricity is
supplied to the unit.
SET TEMPERATURE display
This displays the selected setting
temperature.
AIR DIRECTION display
This displays the air direction.
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 tem-
perature is greater than 39°C.
display
This display lights in the check mode
or when a test operation is per-
formed.
CHECK MODE
TEST RUN
This lamp lights when the filter need
to be cleaned.
AIR SPEED display
The selected fan speed is displayed.
FILTER 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
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7
SPECIFICATIONS
4
4-1. Specification
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
7.1
8.0
340
1,400
235
20 - 15
0.04
15.88(5/8")
9.52(3/8")
45 - 39
24
PKFY-P63VFM-A2
0.11 - 0.12 - 0.12
0.11 - 0.12 - 0.12
0.54 - 0.55 - 0.55
0.54 - 0.55 - 0.55
PKFY-P100VFM-A2
0.13 - 0.14 - 0.14
0.13 - 0.14 - 0.14
0.63 - 0.64 - 0.64
0.63 - 0.64 - 0.64
0.09 - 0.09 - 0.09
0.09 - 0.09 - 0.09
0.43 - 0.43 - 0.43
0.43 - 0.43 - 0.43
0.11 - 0.11 - 0.11
0.11 - 0.11 - 0.11
0.52 - 0.52 - 0.52
0.52 - 0.52 - 0.52
11.2
12.5
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>
PKFY-P63VFM-A
PKFY-P63VFM-A1
PKFY-P100VFM-A
PKFY-P100VFM-A1
Note : Rating conditions (JIS B8616)
Cooling : Indoor D.B. 27°C W.B. 19.0°C
Outdoor D.B. 35°C W.B. 24°C
Heating : Indoor D.B. 20°C
Outdoor D.B. 7°C W.B. 6°C
OC251-A.qxp 03.3.25 9:51 AM Page 7

8
4-2. 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
Dew prevention heater
Symbol
TH21
TH22
TH23
FUSE
MF
C1
MV
LEV
TB2
TB5
TB15
H2
PKFY-P63VFM-A
PKFY-P63VFM-A1
PKFY-P63VFM-A2
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
28.8w / 240V
Service Ref.
Parts name
PKFY-P100VFM-A
PKFY-P100VFM-A1
PKFY-P100VFM-A2
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
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9
OUTLINES AND DIMENSIONS5
Unit : mm
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
439
100
30 37
74
4
2980
280
3030
18430
60
10
39
37
65
100
AB 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
PKFY-P63VFM-A1
PKFY-P63VFM-A2
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10
Unit : mm
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
439
100
30 37
74
4
2980
280
3030
18430
60
10
39
37
65
100
AB 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
PKFY-P100VFM-A1
PKFY-P100VFM-A2
OC251-A.qxp 03.3.25 9:51 AM Page 10

11
WIRING DIAGRAM
6
PKFY-P63VFM-A PKFY-P100VFM-A
PKFY-P63VFM-A1PKFY-P100VFM-A1
(GRN)
(BLU)
DS (OPTION)
(WHT)
DRAIN
CN31
(OPTION)
LED2
5432
TH22
1
4
1 1234567891023456
6
68
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
1CN41 4
CNP
X1
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
DS
I.B
1221 21
432165 87654321 4321
321
MF
21 3
315
654321
2
1
13
2
1
3
DP
13 1
2
31
1
2
31 2
123
A.B
SWC
SW5
220V 240V
2ND
DIGIT
CN82
ADDRESS
(RED)
ON
OFF12345678910
SW1
SW12SW11
3RD
DIGIT
00
1ST
DIGIT
CONNECTION
NO.
SW14
0
ADDRESS
(RED)
CN43
4
3
2
18
7
6
5
4
3
2
1
SW3
<w1>
PKFY-P100VFM-A
654321
OFF
ON 654321
OFF
ON
PKFY-P63VFM-A
Models SW2
<w2>
1098756
ON
OFF 1234
1098756
ON
OFF 1234 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.
OC251-A.qxp 03.3.25 9:51 AM Page 11

12
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
Circuit board
X1
H2
(WHT)
DRAIN
CN31
(BLU)
CNP
X1
OFF 109876
ON
OFF 12345
P100
P63 109876
ON
OFF 12345
654321
ON
ON
OFF 123456
5321
OFF
ON
ON
OFF 12345
4
SW4
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
240V
220V SW5
1
~ 220V 60Hz
POWER SUPPLY
~ 220-240V 50Hz
FUSE(15A)
BREAKER
(15A)
PULL BOX
TO NEXT INDOOR UNIT
<fig : w1>
CONTROLLER
TO MA-REMOTE
Models SW2 SW3
TH21
54321
12345678910
6
LEV
4
123456
8
ON
OFF12345678910
SW1
SW12 SW11
A.B
00
MV
P.B
TRANS CN2S
DC13.1V
(WHT)
(RED)
AC220-240V
CNSK
X4
41
3
5151
X4
ON
SW4
ON SW3SW2
FAN
F.C
CND
FUSE
250V
6.3A
ZNR
CN6V CN42
CN81 OFF OFF
I.B C1
TB151
2
{
(WHT)
DC8.7-13V
(RED)
BLK WHT RED
BLU RED
BLK WHT
ORN
YLW
BLU
PIN
RED
BRN
VANE
(GRN) ADDRESS
(RED) (RED)
ADDRESS
CN52
(GRN)
REMOTE
INDICATION CN51
CENTRALLY
CONTROL
(WHT)
See fig : w1
BLU
RED
BRN
YLW
WHT
ORN
(WHT)
REMOTE
SWITCH
CN32
(WHT)
HA
CN41
(BLK)
GAS
CN29
(RED)
CN20
INTAKE (WHT)
LIQUID
CN21
TH23TH22
(WHT)
LEV
CN60
CN2M
CNDK
(RED) LED1
LED2
(BLU)
CN3A
CN2D
(WHT)
(BLU)
(M-NET)
BLK
WHT
BLU
BLU
ORN
ORN
M1
M2
S(SHIELD)
{
REMOTE CONTROLLER
DC24-30V
BC CONTROLLER
TO OUTDOOR UNIT
TB5
3RD
DIGIT 2ND DIGIT 1ST
DIGIT
0
SW14
CONNECTION
NO.
SWC
(RED)
ADDRESS
CN82
(RED)
ADDRESS
CN43
RED
BLU N
TB2
L
GRN/YLW
321
31
I.B Connector
H2
D.Heater
Aux. Relay (D.Heater)
Dew prevention heater
CNP
X1
Thermistor
TH23
(0°C/15t,25°C/5.4t)
Pipe temp.detection/Gas
Indoor power board
P.B
MA-Remote Controller
TB15
12
1221
4
3
2
18
7
6
5
4
3
2
1
2
1
3
2
1
13
2
1
3
1
2
31
1
2
123456
513
132
MF
1234
12345678
561234
MV
MF
C1
Vane motor
Terminal
block
TB5
TB2
Fan motor (with inner thermo)
Power supply
Transmission
LEV Linear expansion valve
Capacitor (fan motor)
( 0 °C/15t,25°C/5.4t)
Pipe temp.detection/Liquid
( 0 °C/15t,25°C/5.4t)
Room temp.detection
TH22
TH21
Thermistor
1.At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.
2.In case of using MA-Remote controller, please connect to TB15.
(Remote controller wire is non-polar.)
3.In case of using M-NET, please connect to TB5.
(Transmisson line is non-polar.)
4.Symbol[S] of TB5 is the shield wire connection.
5.Symbols used in wiring diagram above are, :terminal block, :connecter.
6.The setting of the SW2 dip switches differs in the capacity for the detail, refer to the fig : w1.
7.Please set the switch SW5 according to the power supply voltage.
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.
Note
Symbol Name Symbol Name
Name
Symbol
FUSE
F.C Fuse (6.3A)
Fan phase control
I.B
ZNR
X4
SW3
SW4
SW2
CN52
CN51
CN41
CN32 Indoor controller board
Connector
Aux.Relay (Fan motor)
Varistor
Mode selection
Capacity code
Remote indication
Centrally control
Remote switch
HA terminal-A
Switch
Model selection
PKFY-P63VFM-A2PKFY-P100VFM-A2
OC251-A.qxp 03.3.25 9:51 AM Page 12

13
REFRIGERANT SYSTEM DIAGRAM7
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-P63VFM-A1
PKFY-P63VFM-A2
PKFY-P100VFM-A
PKFY-P100VFM-A1
PKFY-P100VFM-A2
Gas pipe
Item Capacity
Liquid pipe
{15.88 (5/8")
{9.52 (5/8")
{19.05 (3/4")
{9.52 (3/8")
PKFY-P63VFM-A PKFY-P63VFM-A1PKFY-P63VFM-A2
PKFY-P100VFM-A PKFY-P100VFM-A1PKFY-P100VFM-A2
OC251-A.qxp 03.3.25 9:51 AM Page 13

14
8TROUBLE SHOOTING
8-1. How to check
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 using a tester.
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 (LEV)
Only
PKFY-P63VFM-A
PKFY-P63VFM-A1
PKFY-P100VFM-A
PKFY-P100VFM-A1
Only
PKFY-P63VFM-A
PKFY-P63VFM-A1
PKFY-P100VFM-A
PKFY-P100VFM-A1
Drain-up machine (DP)
(Optional)
Drain sensor (DS)
(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
2k"i5%
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
15
4
2
M
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:)
Fan motor (MF)
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 (MV)
Dew prevention
heater (H2)
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
61
M
PKFY-P63VFM-A PKFY-P63VFM-A1PKFY-P63VFM-A2
PKFY-P100VFM-A PKFY-P100VFM-A1PKFY-P100VFM-A2
OC251-A.qxp 03.3.25 9:51 AM Page 14

15
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (:)
Resistance (K")
4[4
3
6
5
[3
2[2
1[1
[4
[3
[2
[1
Controller board
Drive circuit
Connector(CN60)
DC12V
Brown
Red
Blue
Orange
Yellow
White
M
4
6
2
3
5
1
Blue
Brown
Yellow
Orange
Red
White
Linear expansion valve
<Thermistor Characteristic graph>
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( ) }
0:15k'
10:9.6k'
20:6.3k'
25:5.2k'
30:4.3k'
40:3.0k'
Thermistor for
lower temperature
Linear expansion valve
①Operation 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 expansion valve>
OC251-A.qxp 03.3.25 9:51 AM Page 15

16
Output
(Phase)
Output
{1
1
ON
{2ON
{3OFF
{4OFF
2
OFF
ON
ON
OFF
3
OFF
OFF
ON
ON
4
ON
OFF
OFF
ON
<Output pulse signal and the valve operation>
➁Linear expansion valve operation
➂Trouble 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)
6
5
4
3
2
1
LED1T
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 leak-
ing).
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 tempera-
ture 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 ther-
mistor is leaked,
exchange the linear
expansion valve.
Disconnect the connec-
tor 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 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 ⁄
Apoint 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 ⁄
Eto ⁄ 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.
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17
8-2. FUNCTION OF DIP SWITCH
1
2
3
4
5
6
7
8
9
10
1~6
1
2
3
4
5
6
7
8
9
10
1~5
Thermistor<Intake temperature
detection>position
ON OFF
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 w1w2
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
Heat pump/Cooling only Cooling only model Heat pump model
Louver Available Not available
Vane Available Not available
Vane swing function Available Not available
Vane horizontal angle Second setting First setting
Vane cooling limit angle setting w4 Horizontal angle Down B,C
Effective Not effective
Heater 4degrees up Not effective Effective
Target Superheat setting w5 9degrees 6degrees
Target Sub cool setting 15degrees 10degrees
ON
OFF 12345
ON
OFF 12345678910
ON
OFF 123456
MODELS SW2 MODELS SW2
PKFY-
P63VFM-A PKFY- P100VFM-A
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
Built-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-P63VFM-A = ON
PKFY-P100VFM-A = OFF
Set while the unit is off.
ON
OFF 123456
ON
OFF 12345678910
<At delivery>
ON
OFF 12345
Operated depends
on the condition
Always operated while
the heating mode
Depends on setting
remote controller
PKFY-P63VFM-A PKFY-P63VFM-A1PKFY-P63VFM-A2
PKFY-P100VFM-A PKFY-P100VFM-A1PKFY-P100VFM-A2
OC251-A.qxp 03.3.25 9:51 AM Page 17

18
0
5
9
4
8
3
7
2
6
1
SW12 0
5
9
4
8
3
7
2
6
1
SW11
0
8
F
7
E
6
D
5
C
4
B
3
A
2
9
1
SW14
0
5
9
4
8
3
7
2
6
1
SW12 0
5
9
4
8
3
7
2
6
1
SW11
0
8
F
7
E
6
D
5
C
4
B
3
A
2
9
1
SW14
Address board
Address board
Operation by switchSwitch Pole Remarks
<At delivery>
<At delivery>
SW11
1st digit
address
setting
SW12
2nd digit
address
setting
Rotary switch
SW14
Connect
ion No.
setting
Rotary switch
Address setting should be done when M-NET
remote controller is being used.
This is the switch to be used when the indoor
unit is operated with R2 series outdoor unit
as a set.
220V 240V
220V 240V
Address board
<At delivery>
2
SW5
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
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19
DISASSEMBLY PROCEDURE
9
OPERATING PROCEDURE PHOTOS & ILLUSTRATION
Metal fixture
Screws
1. Removing the lower side of the indoor unit from the instal-
lation plate
(1) Remove the 2 screws.
Hang the indoor unit hangers to the catches on the instal-
lation plate.
Hanger of indoor unit
Catch of installation plate
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.
Terminal cover
Electrical parts box cover
Connector
Connector
Indoor controller
board
Right side panel
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.
4. Removing the electrical parts box
(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover and
controller cover, and remove each the cover.
(3) Disconnect the vane motor, the linear expansion valve,
the room temperature thermistor, the liquid pipe temperature
thermistor and the gas pipe temperature thermistor connector
on the indoor controller board.
(4) Remove the 2 screws of the electrical parts box.
(5) Disconnect the connector of the fan motor lead wire.(Fan
motor side)
(6) Remove the electrical parts box.
Figure 1
Figure 2
Photo 1
Photo 2
Catches
Screws
Room temperature thermistor
Electrical parts
box
Electrical parts
box cover
Indoor controller
board
PKFY-P63VFM-A, PKFY-P63VFM-A1, PKFY-P63VFM-A2
OC251-A.qxp 03.3.25 9:51 AM Page 19

20
OPERATING PROCEDURE PHOTOS & ILLUSTRATION
(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.
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
Drain pan Drain hose
band
Drain hose
Photo 6
Photo 5
Figure 3
Screws for grilles
Slide to the
right Grills
Left side panel
Screws Vane motor
Indoor controller board
Photo 4
Photo 3
Power board Capacitor
Electrical parts box
Catch on the left side panel
Catch on
the unit
Terminal block
OC251-A.qxp 03.3.25 9:51 AM Page 20