Liquid Injection Valve; Constant Speed Outdoor Unit Fan - LG multi V PLUS Service Manual

Self-diagnosis function

Liquid Injection Valve.

heard when applying solenoid
different between both ends of the valve when
the compressor discharge temperature
No failure of liquid injection valve.

Constant Speed Outdoor Unit Fan

Is the connector on the PCB board
normally connected?
Does the fan operate in
load condition of more than 30%
heating operation?
No failure of the fan motor of
constant speed outdoor unit
292 Trouble Shooting Guide
Start of check.
Is operation noise
valve power?
Yes
Is temperature
is normal?
No
Start of check
Yes
No
No
Replace coils.
No
Replace the valve.
No
Reconnect the connector
on the PCB board
Does the fan operate
No
in load condition of more than
30% cooling
operation?
Yes
Replace the fan motor.