Mitsubishi Electric PUHY-HP144TSHMU-A Service Handbook page 60

[ III Outdoor Unit Components ]
4. Fan board
CNVDC
Bus voltage input
N
P
R630
CNINV
Overcurrent detection
Inverter output
resistor
W
V
U
HWE0716A
F01
LED3
Fuse
Lit during normal
250VAC 15A
CPU operation
DIP IPM （Rear）
- 51 -
CN4
GND
Serial communication signal output
CN18V
Input 18VDC GND （Control board）
GND Serial communication signal output
CN22
GND （INV board）
Input 5VDC
Serial communication signal input
GND （INV board） ）
Input 17VDC
CN21
Serial communication signal output
GND （INV board）
Input 17VDC
THBOX
Thermistor
(Control box internal temperature detection)
LED1
Inverter in normal operation
LED2
Inverter error
GB