
Troubleshooting SiBE04-624_B
88 Service Diagnosis
Troubleshooting
Check No.01
Refer to P.134
NO
NO
NO
Check No. 01
Check the indoor heat exchanger
thermistor.
YES
YES
(R18120)
YES
NO
YES
NO
Caution
Provide sufficient air passage.
Clean the air filter.
Clean the indoor heat
exchanger.
Replace the indoor unit PCB.
Replace the thermistor.
As described in the
thermistor characteristic
chart?
Check the air filter.
Check the dust accumulation on
the indoor heat exchanger.
Is there any short circuit?
Dirty?
Dirty?
Check the air passage.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the indoor heat
exchanger.
(Replacement of the
solenoid valve only is
impossible.)
Is the
dehumidifying solenoid valve
still closed?
YES
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