LG ARUV Series Service Manual page 231

1. The phenomena from main component failure
The phenomena from main component failure
Component Phenomenon
Not operating
Compressor
Stop 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 trou-
ble shooting guide is in the service manual
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
The phenomena from main component failure
Cause
Motor insulation broken
Motor insulation failure
Motor failure,
bad ventilation around
outdoor heat exchanger
Bad connector contact
Coil failure
EEV clogged
EEV clogged
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Check method and Trouble shooting
Check resistance between terminals and
chassis
Check resistance between terminals and
chassis
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
LGE Internal Use Only