Daikin FTKS25BVMB Service Manual page 121

Troubleshooting
Troubleshooting
Check No.6
Refer to P.122
Check No.7
Refer to P.123
Check No.9
Refer to P.124
112
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Turn off the power and turn it on
again to get the system started.
Error displayed again?
NO
Check No. 9
Check the outdoor unit
fan or related.
Functioning
Radiation fin dirty?
Slightly dirty
Check No. 7
Check the installation condition.
YES
Check No. 6
Check the thermistor resistance
value.
l
Fin thermistor
Check the radiation fin
temperature.
Thermistor as
specified in its characteristic
chart?
YES
Above 81˚C?
YES
Malfunctioning
Too dirty
SiBE04-302
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.
(R2954)
Service Diagnosis