Daikin B-Series Service Manual page 103

Troubleshooting
Troubleshooting
Check No.6
Refer to P.107
Check No.7
Refer to P.108
Check No.9
Refer to P.109
94
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.
Error again or outdoor unit
fan activated?
NO
Check No. 9
Check the outdoor unit
fan or related.
Functioning
Radiation fin dirty?
Slightly dirty
Check No. 7
Check the installation condition.
WARNING
To cool down the electricals, the
outdoor unit fan gets started when
the radiation fin temperature rises
above 78˚C and stops itself when
it drops below 70˚C.
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 80˚C?
YES
Malfunctioning
Too dirty
Si06-313
NO
Replace the fin thermistor.
NO
Replace the outdoor unit
PCB.
Replace the fan motor.
Correct the connectors and
fan motor leads.
Replace the outdoor unit
PCB.
Clean up the radiation fin.
(R2850)
Service Diagnosis