SiMT041311E
Troubleshooting
Service Diagnosis
136
Troubleshooting
Check No.01
Refer to P.181
NO
NO
NO
YES
Check No. 01
Check the indoor heat exchanger
thermistor.
YES
YES
(R19514)
YES
YES
NO
Caution
Provide sufficient air passage.
Clean the air filter.
Clean the indoor heat
exchanger.
Replace the thermistor.
As described in the
thermistor characteristic
chart?
Check the air filter.
Check for dust accumulation on
the indoor heat exchanger.
Check the connection of the
indoor heat exchanger thermistor.
Is there any short circuit?
Dirty?
Dirty?
NO
Connect the connector
properly.
OK?
Check the air passage.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the indoor unit PCB
(A1P).