LG multi V PLUS

Service Manual 289
No
No
Yes
Is difference
between high pressure
and low pressure more than
3 air pressure 15 minutes
after operation?
Is difference
between high pressure
and low pressure more than
3 air pressure 15 minutes
after operation?
Start of check.
Solve compressor
problems.
4-Way Valve
No failure of 4-Way valve.
Yes
Does the compressor
normally operate?
Reconnect the terminal.
Is connection of the
PCB terminal normal?
Yes
No
No
Yes
Replace the PCB.
Yes
Is voltage applied from
the PCB normal?
Check and replace the
4-way valve coil.
Restart.
No
Self-diagnosis function