LG ARUB115BT2 Installation Manual - Page 68

How to Cope with Test Run Abnormality

Page 68 highlights

Test Run How to Cope with Test Run Abnormality The phenomena from main component failure Component Phenomenon Cause Check method and Trouble shooting Compressor Outdoor fan Outdoor EEV Not operating Motor insulation broken Check resistance between terminals and chassis Stop during running Motor insulation failure Check resistance between terminals and chassis High pressure error Motor failure, Check the outdoor fan operation after being at cooling Bad ventilation around turned the outdoor units off for some time. outdoor heat exchanger Remove obstacles around the outdoor units Heating failure, fre- Bad connector contact Check connector quent defrosting No operating sound Coil failure at applying power Check resistance between terminals Heating failure, EEV clogged Frozen outdoor heat exchanger part Service necessary Low pressure error EEV clogged or discharge temperature error Service necessary 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 68 Outdoor Unit

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68
Outdoor Unit
68
Outdoor Unit
Test Run
How to Cope with Test Run Abnormality
The phenomena from main component failure
Compressor
Outdoor
fan
Outdoor
EEV
Not operating
Stop during running
High pressure error
at cooling
Heating failure, fre-
quent defrosting
No operating sound
at applying power
Heating failure,
Frozen outdoor heat
exchanger part
Low pressure error
or discharge temper-
ature error
Motor insulation broken
Motor insulation failure
Motor failure,
Bad ventilation around
outdoor heat exchanger
Bad connector contact
Coil failure
EEV clogged
EEV clogged
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
Component
Phenomenon
Cause
Check method and Trouble shooting
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