Service manual

24
8-3. TEST POINT DIAGRAM
8-3-1. Indoor controller board
PKFY-P32VHM-E PKFY-P40VHM-E PKFY-P50VHM-E
PKFY-P32VHM-ER1 PKFY-P40VHM-ER1 PKFY-P50VHM-ER1
PKFY-P32VHM-ER2 PKFY-P40VHM-ER2 PKFY-P50VHM-ER2
CN3A
Connected to the ter-
mial block (TB15)
(MA-Remote controller
connecting wire)
1 - 3 : 8.7-13V DC
(Pin1 (+))
CN44
Pipe temperature thermistor
1-2 : Liquid (TH22)
3-4 : Gas1 (TH23)
SW4
Model selection
CND
Power supply for
indoor controller board
1-3 : 220-240AC
SW2
Capacity setting
LED1
Main power supply
(Indoor unit :
220-240V)
CN20
Room temperature
thermistor (TH21)
LED2
Power supply for
MA-Remote con-
troller
CN32
Remote switch
Jumper wire J41,
J42
Pair No. setting for
wireless remote
controller
LDSWE(A)
Connect to the
wireless remote
controller board (S.B)
CN2M
Connect to the
terminal block (TB5)
(M-NET transmission
connecting wire)
24-30VDC (non-polar)
Power supply from
outdoor unit
SW3
Function setting
CN2G
Pipe temperature
thermistor
Gas2 (TH24)
CN4F
Drain float switch
(FS)
CN60
Liner expansion
valve (LEV) output
12VDC pluse output
CNRU
Connect to the
wireless remote
controller board (W.B)
CN151
Vane motor output
12VDC pluse
CNP
Drain pump output
(DP)
1-3 : 220-240AC
FUSE
3.15A 250V
CNMF
Connect to the fan motor (MF)
1-3 : DC310~340V
4-3 : DC15V
5-3 : DC0~6V
6-3 : DC0 or DC15V
LD SWE (B)
Connect to the
indoor controller
board (I.B)
CN51
Centrally control
1-2 : Control signal
12VDC pulse input (1 : +)
3-4 : Operation indicator
12VDC (3 : +)
3-5 : Malfunction indicator
12VDC (3 : +)
CN52
Remote indicator
1-2
: Status lamp 12VDC (1 : +)
Fan motor output
(SW1-5 OFF)
Thermostat ON
(SW1-5 ON)
1-3: Cooling/Dry status lamp
12VDC (1 : +)
1-4: Heating status lamp
12VDC (1 : +)
The voltage range of DC12V in this
page is between DC11.5 V to DC 13.7 V.
OCH442B