SiBE12-908
Troubleshooting
Service Diagnosis
164
Troubleshooting
Check No.02
Refer to P.169
(R9456)
[ ]
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Power supply OFF
Is the supply voltage
appropriate?
NO
Modify supply voltage.
YES
NO
YES
Is heater well cooled?
Cool it
down.
Measure resistance between
heater connectors
Is the heater
resistance
appropriate?
YES
NO
YES
NO
At normal temperature:
61.0
Ω
±3%
Is thermal fuse blown?
NO
YES
Check No.02
Is a resistance of
thermal thermistor at
humidification fan
outlet appropriate?
Replace heater ASSY.
Replace heater ASSY.
Replace the thermistor.
*For details, refer to
PH
troubleshooting
Replace indoor control
PCB (A1P).
*Main relay could be
damaged.
When the main relay
(MRM10) is damaged,
heater and rotor do not run.