SiUS04-702 Troubleshooting
Service Diagnosis 157
Troubleshooting
Check No.06
Refer to P.173
Check No.07
Refer to P.174
Check No.09
Refer to P.175
Turn off the power and turn it on
again.
Check No. 06
Check the thermistor resistance
value.
Replace the fin thermistor.
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.
(R5474)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Error again or outdoor unit
fan activated?
YES
z Fin thermistor
NO
Slightly dirty
Check No. 09
Check the outdoor unit
fan or related.
Malfunctioning
Radiation fin dirty?
Too dirty
Functioning
Thermistor as
specified in its characteristic
chart?
Above 176˚F?
NO
YES
NO
YES
Check the radiation fin
temperature.
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 176˚F and stops itself when it
drops below 158˚F.
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