How To Cope With Test Run Abnormality - LG ARUN115DT2 Installation Manual

How to Cope with Test Run Abnormality

The phenomena from main component failure
Component Phenomenon
Not operating
Compressor
Stop during running
Abnormal noise
during running
High pressure error
Outdoor
at cooling
fan
Heating failure, fre-
quent defrosting
No operating sound
at applying power
Outdoor
Heating failure,
EEV
frozen outdoor heat
exchanger part
Low pressure error
or discharge temper-
ature 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
Cause
Motor insulation broken Check resistance between terminals and
chassis
Strainer clogged Change strainer
Oil leakage Check oil amount after opening oil port
Motor insulation failure Check resistance between terminals and
chassis
R-S-T misconnection Check compressor R-S-T connection
Motor failure, Check the outdoor fan operation after being
bad ventilation around turned the outdoor units off for some time.
outdoor heat exchanger Remove obstacles around the outdoor units
Bad connector contact Check connector
Coil failure Check resistance between terminals
EEV clogged Service necessary
EEV clogged Service necessary
Check method and Trouble shooting
Installation Manual 67
Test Run