Table of Contents
[ III Outdoor Unit Components ]
[3] Outdoor Unit Circuit Board
1. Outdoor unit control board
(PUHY-P250YHM-A)
CNDC
Bus voltage input
P
N
CNAC2
L1
N
CN51
Output 12VDC
Compressor
ON/OFF output
Error output
Actuator
driving output
CN72
72C
driving output
LED3
Lit
when powered
LED2
Lit during normal
CPU operation
CNAC
L1
N
HWE07150
CN2
Serial communication signal input
GND INV board
Output 17VDC
LED3
Lit
when powered
F01
External signal input (contact input)
Fuse
250V AC／3.15A
CN332
Output 18VDC
CN801
Pressure switch
GND
（Fan board）
connection
CN41
Power supply for
CN40
centralized control OFF
Power supply for
centralized control ON
CN102
Power supply input for centralized control system (30VDC)
Indoor/outdoor transmission line input/output (30VDC)
- 34 -
CN4
GND
Serial communication signal output
LEV
driving output
SW1-5
Dip switch
Sensor
input
CNVCC2
Output 12VDC
Output 5VDC
GND
CNIT
Output 12VDC
GND
Output 5VDC
Power supply detection input
Power supply ON/OFF signal output
CNS2
Transmission line input/output
for centralized control system (30VDC)
LED1
Service LED
SWU1,2
Address switch
GB
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