Carrier 38LUVH055N, Руководство по обслуживанию

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9.2.9 P2(temperature protection of compressor top) diagnosis and solution.
9.2.10 P4(inverter compressor drive error) diagnosis and solution.
Is the connection of
compressor good? Is the
wiring sequence right?
The voltage range
proper?
Replace the outdoor E-box.
If the problem comes to
again, check coil
resistance of inverter
compressor, is it
0.668ohm?
YES
Replace inverter
compressor
Reconnect and retry
NO
NO
Replace the outdoor
PCB.
YES
NO
YES
Does compressor
operate?
Is the connection
good?
Is refrigerant circulation
volume normal?
NO
NO
Charge refrigerant
Is abnormality the
same after gas
charging?
Check refrigerant system
(such as clogging of
capillary, etc)
Reconnect and retest.
NO
YES
Is protector
normal?
Replace the protector.
NO
YES
Check the outdoor
main PCB. Is there
some problem?