1102
(U2)
Compressor temperature trouble
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis Remedy
Yes
Yes
Yes
No
No
No
Continued from the previous page
Is the voltage normal value?
Is it free from any trace of over-
heating or burning?
Is there a resistance detected?
Is there a resistance detected?
Check the voltage and appearance of the
outdoor controller board.
Disconnect the thermistor wiring to check
the resistance.
Disconnect the indoor LEV wiring and
check the resistance.
Replace the outdoor controller board.
Replace the thermistor.
Replace the indoor LEV.
Replace the indoor controller board.
Chart 2 of 2
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