Daikin FTXN09KEVJU Service Manual page 89

SiUS041111
Troubleshooting
Check No.01
Refer to P.116
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the air passage.
Is there any short circuit?
NO
Check the air filter.
Is it very dirty?
NO
Check the dust accumulation on
the indoor heat exchanger.
Is it very dirty?
NO
Check No. 01
Check the indoor heat exchanger
thermistor.
Does it conform to
the thermistor
characteristic chart?
YES
YES
YES
YES
NO
Troubleshooting
Provide sufficient air passage.
Clean the air filter.
Clean the indoor heat
exchanger.
Replace the thermistor.
Replace the indoor unit PCB.
(R14402)
81