Mitsubishi Electric PUZ-A NHA Series Service Manual page 28

Heat pump, ceiling cassettes r410a, indoor unit
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10-7-2. Indoor controller board
PLA-A12AA
PLA-A18AA
PLA-A12AA
PLA-A18AA
1
CN2D
Connect to the indoor power board
(CN2S)
(12.5~13.7V DC)
CN3C
Transmission
(Indoor/outdoor)
(0~24V DC)
CNDK
Connect to the indoor
power board (CNSK)
(208/230V AC)
FUSE
(6.3 A 250 V)
CND
Power supply input
(208/230V AC)
CNP
Drain-pump output
(DP)
(208/230V AC)
CNC
Dew prevention
heater (H2)
(208/230V AC)
SWE
Emergency operation
FAN
Fan motor output
PLA-A24AA
PLA-A30AA
PLA-A24AA
PLA-A30AA
1
1
LED1
Power supply (I.B)
PLA-A36AA
PLA-A42AA
PLA-A36AA
PLA-A42AA
1
1
LED2
LED3
Power supply (R.B)
Transmission (Indoor/outdoor)
28
1
CN22
Connect to the terminal
block(TB5)
(Remote controller connecting
wire)
(10.4~14.6V DC)
CN20
Room temperature
thermistor (TH1)
CN21
Pipe temperature
thermistor/Liquid (TH2)
CN29
Condenser/evaporator
temperature thermistor (TH5)
CN31
Drain sensor (DS)
CN90
Connect to the wireless
remote controller board
(CNB)
CN6V
Vane motor output
(MV)
CN41
Connector (HA terminal-A)
CN51
Centrally control
CN24
Heater output
(12V DC)
CN32
Remote switch
CN2L
Connector
(LOSSNAY)
Jumper wire J41, J42
Pair number setting with
wireless remote controller
SW2
Capacity setting
SW1
Model setting

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