Gree GWC12KF-K3DNA5A Service Manual page 60

Troubleshooting
(4) Malfunction diagnosis of startup failure
Main detection points:
Is wiring of compressor correct.
Is the stop time of compressor enough?
Is compressor damaged?
Malfunction diagnosis process:
(5) Diagnosis of losing synchronism for compressor
Main detection points:
Is pressure of the system too high?
Is voltage too low?
Malfunction diagnosis process:
Adjust
connecting wire
Losing synchronism
upon startup of
the unit
Is the stop time
of compressor more
N
than 3min？
Y
Is wire of compressor
well connected?
N
Y
Replace parts
of outdoor
electric box
Y
Remove error?
N
Replace
compressor
Finish
Energize the
unit and start it
Is the stop time
of compressor more
than 3min£¿
Y
N
Startup failure?
Y
Is compressor wire connected correctly?
Y
Replace parts of outdoor
electric box
Remove the error?
N
Replace
compressor
finish
Losing synchronism
during running
Is outdoor fan normal?
Y
Is outdoor fan
blocked by
stuff?
N
Replace parts
of outdoor
electric box
Remove error?
N
Replace
compressor
Finish
N
Start it 3 min later
Connect it according
N
to wiring diagram
Y
Is fan well
N
connected?
Reliable
Remove
Y
connected?
stuff
Replace parts
of outdoor
electric box
Y
Remove error?
Replace
Y
outdoor fan
Y
N
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