NO
NO
NO
Check No. 01
Check the indoor heat exchanger
thermistor.
YES
YES
(R14402)
YES
YES
NO
Caution
Provide sufficient air passage.
Clean the air filter.
Clean the indoor heat
exchanger.
Replace the indoor unit PCB.
Replace the thermistor.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the air passage.
Is there any short circuit?
Check the air filter.
Is it very dirty?
Check the dust accumulation on
the indoor heat exchanger.
Is it very dirty?
Does it conform to
the thermistor
characteristic chart?
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