Si12-411A Troubleshooting
Service Diagnosis 199
Troubleshooting
Check No.6
Refer to P.209
Check No.7
Refer to P.210
Check No.9
Refer to P.211
Turn off the power and turn it on
again to get the system started.
Check No. 6
Check the thermistor resistance
value.
Replace the fin thermistor.
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.
(R2851)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Error displayed again?
YES
NO
Slightly dirty
Check No. 9
Check the outdoor unit
fan or related.
Malfunctioning
Radiation fin dirty?
Too dirty
Functioning
Thermistor as
specified in its characteristic
chart?
Above 90˚C?
NO
YES
NO
YES
z Fin thermistor
Check the radiation fin
temperature.
Check No. 7
Check the installation condition.
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