Service manual

24
8-3. TEST POINT DIAGRAM
8-3-1. Indoor controller board
PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E
PKFY-P20VBM-ER1 PKFY-P25VBM-ER1
PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2
PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3
CN3A
Connected to the
MA-Remote controller
Between 1 to 3 8.7-13V DC
(Pin1 (+))
CN29
Pipe temperature
thermistor/Gas (TH23)
CN21
Pipe temperature
thermistor/Liquid (TH22)
CN90
Connected to the
wireless remote
controller board
(W.B)
CN60
Linear expansion
valve output (LEV)
SW3
Mode selection
SW2
Capacity setting
CN5V
Vane motor
output (MV)
CN20
Room temperature
thermistor (TH21)
CN53M
Connected to the indoor power board (CN53P)
Between 1 to 2 24-30V DC (non-polat)
Between 3 to 5 12.5-13.7V DC (Pin3 (+))
Between 4 to 5 11.5-12.7V DC (Pin4 (+))
CN35M
Connected to the indoor
power board (CN35P)
LED2
Indication of power supply
for MA-Remote controller
CN41
Connector
(HA terminal-A)
CN32
Connector
(Remote switch)
J41, J42
Wireless remote controller
Pair No. setting
JP105
Model setting
CN81
Connected to
the address
board (CN82)
CN42
Connected to
the address
board (CN43)
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 above
is between DC11.5 V to DC 13.7 V.
OCH418C