1. The phenomena from main component failure
The phenomena from main component failure
Component
Phenomenon
Not operating
Compressor
Stop during running
Abnormal noise
during running
Heating failure, fre-
quent defrosting
No operation sound
after switching ON
the power supply
Outside
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 on the indoor unit display or remote control display. The
trouble shooting guide is available in the service manual.
• When CH05/53/11 ERROR occurs, check if auto-addressing has done and communication wiring is ok.
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Only for training and service purposes
The phenomena from main component failure
Cause
Motor insulation broken
Strainer clogged
Oil leakage
Motor insulation failure
R-S-T misconnection
Bad connector contact
Coil failure
EEV clogged
EEV clogged
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Check method and Trouble shooting
Check resistance between terminals and
chassis
Change strainer
Check Oil level after opening oil port
Check resistance between terminals and
chassis
Check compressor R-S-T connection
Check resistance between terminals
Service necessary
Service necessary
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