Properly connect the harness.
NO
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the harness
between terminal block
and outdoor unit main PCB
securely connected?
(1)
Replace the outdoor unit main PCB
(A1P).
NO
YES
The
microcomputer normal
monitor (green) on the outdoor
unit main PCB (A1P) is
blinking.
NO
Replace the outdoor unit main PCB
(A1P).
YES
Continue operation.
The error could have resulted from
causes such as instantaneous
power failure.
The LC error recurs.
Replace the fan motor.
YES
NO
The insulation
resistance of the
compressor is less than
100 k.
The insulation
resistance of the fan motor
is less than
1 M
Replace the compressor.
YES
NO
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