LG ACHH Series Manual page 99

Compressor
Check start
After the starting,
is there a difference between high pressure
and low pressure?
Yes
When operating a compressor,
is current valve normal?
Yes
No problem on a compressor
No
Is 3 Phase power connected
to the correct direction?
Is a signal normally permitted from PCB?
No
Are all the directions of
4way valve normal?
Compressor
replacement
After the starting,
is there a difference between high pressure
and low pressure?
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No
Yes
No
Yes
Restart
No
Yes
Error code check
Terminal
reconnection or
power supply
direction
replacement
PCB replacement
4 way replacement
Compressor
replacement