Daikin FTXN25KEV1B Service Manual page 66

Troubleshooting
Troubleshooting
Check No.01
Refer to P.87
56
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
SiBE041102_A
Provide sufficient air passage.
Clean the air filter.
Clean the indoor heat
exchanger.
Replace the thermistor.
Replace the indoor unit PCB.
(R14402)
Service Diagnosis