83
TROUBLESHOOTING
When the inverter PBA LED is ON, it
indicates that the compressor does
operate normally
Refer to the TEST Function in this
manual
10 minutes have passed
since COMP was off
Start
Check in 10 minutes
NORMAL (Recheck)
No
Yes
When Forced
Operation mode is activated,
COMP operates
Yes
COMP operation
Signal(CN201
②↔③
) is High(about
DC 2-2.5V or AC 0~5.0V)
Yes
Is DC 15V applied to
ZD501?
Yes
CN101/CN102/CN301
Connector is Good
Yes
No
Temperature Sensor is
normal?
Yes
Temperature sensing
part of MAIN PBA is
Good
Yes
Replace MAIN PBA or
Repair the connection
Check the COMP wire
Check the Compressor
Check AC Power wire
No
No
Replace the Sensor
No
Repair the sensing part or
Replace MAIN PBA
Forced Operation signal
sound should be checked
Yes
0~800Hz 50% Duty Signal
Output
Check the wire harness
Replace the MAIN PBA
No
Replace INVERTER PBA
No
Yes
COMP ASS'Y is Good
Replace COMP ASS'Y
No
4-13) When the Compressor is not working (INVERTER PBA)
- 2 BOARD
