Troubleshooting SiENBE12-713
264 Service Diagnosis
Troubleshooting
Check No.06
Refer to P.279
P4 : Radiation fin thermistor
J3 : Discharge pipe thermistor
J6 : Outdoor unit heat exchanger thermistor
J8 : Liquid pipe thermistor
J9 : Gas pipe thermistor
H9 : Outdoor temperature thermistor
Turn on the power again.
Reconnect.
Reconnect.
Replace defective one(s) of
the following thermistors.
Radiation fin thermistor
Discharge pipe
thermistor
Outdoor unit heat
exchanger thermistor
Liquid pipe thermistor
Gas pipe thermistor
Outdoor temperature
thermistor
Replace the following
thermistor.
Indoor unit heat
exchanger thermistor
Replace the outdoor unit
PC board. (Repl
ace the
indoor unit PC board.)
(R4718)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Error displayed again
on remote control?
NO
YES
YES
YES
NO
Indoor unit
heat exchanger thermistor
functioning?
NO
Connector or thermistor
disconnected?
NO
YES
J3 error if discharge pipe
thermistor temperature is
smaller than condenser
thermistor temperature
Cooling: Outdoor unit heat
exchanger thermistor
Heating: Indoor unit heat
exchanger thermistor
Normal?
Check No. 06
Check the thermistor resistance
value.
Check No. 06
Check the indoor unit heat
exchanger thermistor resistance
value in the heating mode.
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