LG multi V ARUN Series Installation Manual page 85

How to Cope with Test Run Abnormality
The phenomena from main component failure
Component
Not operating
Compressor
Stop during running
Abnormal noise
during running
High pressure error
Outdoor
at cooling
fan
Heating failure,
frequent defrosting
No operating sound
at applying power
Outdoor
Heating failure,
EEV
frozen outdoor heat
exchanger part
Low pressure error
or discharge
temperature error
When system fault occurs, the error code is displayed at indoor unit display or remote control display,
the trouble shooting guide is in the service manual
Phenomenon
Motor insulation broken
Strainer clogged
Oil leakage
Motor insulation failure
R-S-T misconnection
Motor failure,
bad ventilation around
outdoor heat exchanger
Bad connector contact
Coil failure
EEV clogged
EEV clogged
Cause Check method and Trouble shooting
Check resistance between terminals and
chassis
Change strainer
Check oil amount after opening oil port
Check resistance between terminals and
chassis
Check compressor R-S-T connection
Check the outdoor fan operation after being
turned the outdoor units off for some time.
Remove obstacles around the outdoor units
Check connector
Check resistance between terminals
Service necessary
Service necessary
Test Run
Installation Manual 85