Specifications

SiBE18-821 Troubleshooting for RA Indoor Unit
Troubleshooting 267
Troubleshooting
Check No.06
Refer to P.273
NO
NO
NO
Check No. 06
Indoor unit heat exchanger
thermistor check
YES
YES
(R7131)
YES
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Provide sufficient air
passage.
Clean the air filter.
Clean the heat exchanger.
Replace the indoor unit
PCB.
Replace the thermistor
(replace the indoor unit
PCB).
Does it
conform to the
thermistor characteristic
chart?
Check the intake air filter.
Check the dust accumulation on
the indoor unit heat exchanger.
Is there any short-circuit?
Is it very dirty?
Is it very dirty?
Check the air passage.