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[3] Outdoor Unit Circuit Board
1. Outdoor MAIN board
(1) PUHY/PURY
CNRS3B
Serial communication input from
CN38
and output to inverter board
High-pressure
switch (63H)
CNRT1
1 - 5
Power output to relay
board (AC208/230V)
1 - 3
51C2 detection
signal input
CN52C
52C1 driving output
AC 208/230V
1 - 3
CN51
3 - 4
Compressor operation
3 - 5
Outdoor unit operation
error signal output
Output from solenoid
valve for unit control etc.
(208/230V)
CNOUT1
Relay drive output
to relay board
CNAC3
Power output
3 L1 phase
1 L2 phase
CN20
Power input
5 L1 phase
1 Ground
CN21
Power input
3 L2 phase
1 L3 phase
CNRS3A
Serial communication input from
and output to fan inverter board
LD2
Address SW
F1,F2 Fuse
AC 250V/6A
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[ III Outdoor Unit / BC Controller Components ]
CNS1
CNS2
For indoor/outdoor
For centralized control
transmission line (DC30V)
system (DC30V)
Control sensor input
CN40(with power supply
to centralized system)
CN41(without power supply to
centralized system)
Power input for CNVCC1 control
1 - 2
DC 30V
1 - 3
DC 30V
4 - 5
DC 7V
4 - 6
DC 12V
7 - 8
DC 7V
CN3D
1 - 2 NIGHT MODE input
1 - 3 DEMAND input
CN3S
1 - 2 Snow sensor input
LD1
Service LED
CNLVB
LEV1 Output
Dip switch
SW1 - SW5
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