Daikin CTXU25G2V1B Service Manual page 145

Troubleshooting
Troubleshooting
Check No.02
Refer to P.162
Check No.03
Refer to P.163
Check No.05
Refer to P.163
142
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
(Note on resetting power supply)
To reset the machine, power off status
need to continue at least 30 sec.
Turn off the power and turn it on
again.
Does the fault
appear again? Does
the outdoor fan run?
NO
Check No.05
Outdoor fan system
check
YES
Radiation fin dirty?
Slightly dirty
Check No.03
Installation condition check
WARNING
To cool down the electricals, the
outdoor unit fan gets started when
the radiation fin temperature rises
above 75˚C even when the air
conditioning is not operated and
stops itself when it drops below
70˚C.
YES
Check No.02
Thermistor resistance check
· Fin thermistor
Check the radiation fin
temperature
Does the thermistor
meet the specification
chart of thermistor?
YES
Does the temperature
exceed the temperature
to stop operation?
YES
NO
Too dirty
SiBE12-908
NO
Replace the fin thermistor.
NO
Replace the outdoor unit
PCB.
Replace the fan motor.
Rectify the connector and
the fan motor lead wire.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
(R9447)
Service Diagnosis