Daikin F-Series Service Manual page 107

Troubleshooting
Troubleshooting
Check No.06
Refer to P.132
96
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. 06
Indoor unit heat exchanger
thermistor check
Does it
conform to the
thermistor characteristic
chart?
NO
YES
YES
YES
YES
Si04-703A
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)
Service Diagnosis