Troubleshooting SiUS04-904
Service Diagnosis 131
Troubleshooting
Check No.06
Refer to P.146
Check No.07
Refer to P.147
Check No.09
Refer to P.148
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts damage may occur.
WARNING
To cool down the electricals, the
outdoor unit fan gets started when
the radiation fin temperature rises
above 176°F (80°C) and stops itself
when it drops below 158°F (70°C)
(R10493)
YES
Fin thermistor
NO
Slightly dirty
Malfunctioning
Too dirty
Functioning
NO
YES
NO
YES
Turn off the power and turn it on
again.
Check the radiation fin
temperature.
Check No. 07
Check the installation condition.
Radiation fin
dirty?
Above 176°F
(80°C)?
Thermistor as
specified in its characteristic
chart?
Check No. 06
Check the thermistor resistance
value.
Check No. 09
Check the outdoor unit fan or
related.
Error again or
outdoor unit fan activated?
Replace the fin thermistor.
Replace the outdoor unit
PCB.
Replace the outdoor unit
PCB.
Replace the fan motor.
Correct the connectors and
fan motor leads.
Clean up the radiation fin.
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