Mitsubishi Electric PUHY-HP144TSHMU-A Service Handbook page 59

[ III Outdoor Unit Components ]
3. INV board
CNTH
Thermistor input
(THHS)
CNCT2
Current sensor (AC) input
ACCT1
ACCT2
CNCT
Current sensor (DC) input
(DCCT1)
FT-N(Note)
BUS voltage output(N)
SC-P1
Bus voltage input/output(P)
IPM-P
BUS voltage output(P)
(IPM input)
1) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter-
minals to remove them.
HWE0716A
CNCT3
Current (AC) sensor input
(ACCT3)
CNTYP
Function setting input
(Z26)
LED1
Inverter in
normal operation
CNIPM
Power supply/signal output
for IPM drive
IPM error signal input (IPM output)
IPM-N
BUS voltage input/output(N)
(IPM input)
- 50 -
LED2
Inverter error
LED4
Lit during normal
CPU operation
CNDC1
BUS voltage output
P
N
CNDC2
BUS voltage input
P
N
SW1
ON: No-load operation setting
OFF: Normal operation setting
: Fixed to OFF
CN5V
GND
Output 5VDC
CN2
Serial communication
signal output
GND
Input 17VDC
CN4
GND
(Fan board)
Serial communication
signal input
LED3
Lit while charging
CNFG
Functional earth
F02
Fuse
250VAC 3.15A
CNDC3
BUS voltage output
P
N
GB