Daikin FTXS09HVJU Service Manual page 112

Troubleshooting
Troubleshooting
Check No.06
Refer to P.146
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts damage may occur.
Check the air passage.
Is there any short-circuit?
NO
Check the intake air filter.
Is it very dirty?
NO
Check the dust accumulation on
the indoor unit heat exchanger.
Is it very dirty?
NO
Check No. 06
Indoor unit heat exchanger
thermistor check
Does it
conform to the
thermistor characteristic
chart?
NO
YES
YES
YES
YES
SiUS04-904
Provide sufficient air passage.
Clean the air filter.
Clean the heat exchanger.
Replace the indoor unit PCB.
Replace the thermistor
(replace the indoor unit PCB).
(R7131)
101