LG multi V PLUS, Service Manual

Page: 286 / 373

286 Trouble Shooting Guide
No
No
No
No
No
No
Yes
Is there difference
between high pressure and
low pressure after
operation?
Is current value
normal when operating the
compressor?
Start of check
Check or reconnect
power lines
Compressor.
No failure of compressor.
Yes
Yes
Is R.S.T. power
connection normal?
Yes
Replace the PCB.
Is signal normally applied
from the PCB?
Yes
Yes
Check or replace
4way valve
Replace the compressor.
Restart.
Replace the
compressor.
Is the direction of
4way valve normal?
Is there difference
between high pressure and
low pressure after
operation?
Self-diagnosis function