Daikin F-Series Service Manual page 238

SiBE12-712
Troubleshooting
Check No.06
Refer to P.240
Check No.07
Refer to P.241
Check No.09
Refer to P.242
Service Diagnosis
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
(Precaution before turning on the power again)
Make sure the power has been off for at least 30 seconds.
Turn off the power and turn it on
again to get the system started.
Error displayed again?
NO
Check No. 09
Check the outdoor unit
fan or related.
Functioning
Radiation fin dirty?
Slightly dirty
Check No. 07
Check the installation condition.
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. 06
Check the thermistor resistance
value.
Fin thermistor
Check the radiation fin
temperature.
Thermistor as
specified in its characteristic
chart?
YES
Above 90˚C?
YES
Malfunctioning
Too dirty
Troubleshooting
NO
Replace the fin thermistor.
NO
Check the power transistor
and fin for looseness. If
they are found to be fit
tightly, replace the PCB or
the power transistor.
Replace the fan motor.
Correct the connectors and
fan motor leads.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
(R7036)
227