Daikin FTX25JVEA9 Service Manual page 247

Troubleshooting - Split Type Indoor Unit
Troubleshooting
Check No.8
Refer to P.305
234
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
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. 8
Indoor unit heat exchanger
thermistor check
Does it
conform to the thermistor
characteristic chart?
NO
YES
YES
YES
YES
Si18-201
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).
(MF002)
Service Diagnosis