Mitsubishi PKFY-P32VGM-A Operating manual

TECHNICAL & SERVICE MANUAL
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. RoHS PARTS LIST..................................19
<Indoor unit>
[Model names]
PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A
Series PKFY
Indoor unit
R407C
/
R22
[Service Ref.]
PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A
March 2013
No. OC250
REVISED EDITION-A
Revision:
• The indicated No. of CORNER
COVER (page 19) in the illus-
tration has been corrected in
REVISED EDITION-A.
• Some descriptions have been
modified.
• Please void OC250.
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
Note:
• RoHS compliant products
have <G> mark on the spec
name plate.
• For servicing of RoHS com-
pliant products, refer to the
RoHS Parts List.

2
1SAFETY PRECAUTION
Cautions for units utilizing refrigerant R407C
CAUTIONS RELATED TO NEW REFRIGERANT
Do not use the existing refrigerant piping.
The old refrigerant and lubricant in the existing piping
contain 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.
Use a small amount of ESTER , ETHER or HAB
as the lubricant to coat flares and flange
connection parts.
If large amount of mineral oil enters, that can cause
deterioration of refrigerant oil etc.
Use liquid refrigerant to charge 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.
Store the piping indoors, and 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.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Use the specified refrigerant only.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
OC250A

33
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 3.43 MPa·G or over.
2Charge hose · Only for R407C
· Use pressure performance of 5.10 MPa·G or over.
3Electronic scale —
4Gas leak detector · Use the detector for R134a or R407C.
5Adaptor 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 —
[3] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
• R407C cylinder 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 all the 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.
[2] Cautions for service
• After recovering all the 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.
OC250A

4
2PART NAMES AND FUNCTIONS
●Indoor Unit
PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A
●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
Air intake Air intake grille
Filter
Air outlet
Guide vane
Auto vane
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK ON OFF
°C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
°C
1Hr.
NOTAVAILABLE
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.
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
OC250A

55
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. 2
minutes). 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
operation 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 display
lamps light is shown for explanation
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.
NOTAVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
OC250A

6
3SPECIFICATIONS
3-1. SPECIFICATION
Item
V•Hz
kW
kW
kW
kW
A
A
—
mm
mm
mm
—
—
G/min
Pa
kW
—
—
:mm(in.)
:mm(in.)
:mm
dB
kg
Cooling capacity
Power
Heat exchanger
Insulator
Air filter
Fan × No
Air flow *2
Pipe
dimensions
Unit drain pipe size
Noise level *2
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
Note 1.Rating conditions
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
*2.Air flow and the noise level are indicated as High - Medium1 - Medium2 - Low .
OC250A

77
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 1255
°C
2.0F 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
OC250A

8
4 OUTLINES AND DIMENSIONS
Knockout hole for right piping Refrigerant pipe.Drain pipe. Wiring hole
Gas pipe
Liquid pipe
Address board
Filter grip
21
21
Knockout 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
Knockout 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
Knockout 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
1Sleeves are available on the market. 2This size shows the lower end of through hole.
:90 ~ :100 :75 ~ :80
:90 :75
Through holeSleeve *1
50 32 , 40 Model
Details of installation plate
14 - :14 hole for bolts
Left-rear piping hole
Knockout 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 0 35 55 80 130 190 230 272 310 0
35
95
150
205
260
320
345
495
20
75
135
190
245
300
360
405
495
32
0
+2
Unit : mm
PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A
OC250A

9
WIRING DIAGRAM
5
PKFY-P32VGM-A , PKFY-P40VGM-A , PKFY-P50VGM-A
(GRN)
LED2
5432
TH22
1
4
1 1234567891023456
6
68
LEV
TH21
The black square ( ) indicates a switch position.
TH23
0N
SW4
0N SW3SW2
0FF 0FF
P.B
TRANS CN2S
DC13.1V
(RED)
AC220v~240V
CNSK
X4
CNDK CN2D WHT
ORN
ORN
1CN41 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:+1
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
21 3
315
654321
2
1
13
2
1
3
1
2
31
1
2
31 2
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
21
OFF
ON
345678910
PKFY-P50VGM-A ON
OFF 123456
<+1>
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/15kΩ, 25°C/5.4kΩ)
(0°C/15kΩ, 25°C/5.4kΩ)
(0°C/15kΩ, 25°C/5.4kΩ)
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:+1.
Note
5.
When the power supply is 220 volts,set SW5 to 220V side.
Symbols used in wiring diagram above are, : terminal block, :connector.
OC250A

10
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
Gas pipe
PKFY-P32VGM-A, PKFY-P40VGM-A
{12.7 (1/2”)
Liquid pipe {6.35 (1/4”)
Capacity
Item PKFY-P50VGM-A
[15.88(5/8”)
[9.52(3/8”)
OC250A