Daikin CTXU25G2V1B Service Manual page 160

SiBE12-908
Troubleshooting
Check No.02
Refer to P.162
Service Diagnosis
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is the supply voltage
appropriate?
Power supply OFF
Is heater well cooled?
Measure resistance between
heater connectors
Is the heater
resistance
appropriate?
[ ]
At normal temperature:
61.0Ω±3%
Is thermal fuse blown?
Check No.02
Is a resistance of
thermal thermistor at
humidification fan
outlet appropriate?
NO
YES
NO
YES
NO
YES
YES
NO
NO
YES
Troubleshooting
Modify supply voltage.
Cool it
down.
Replace heater unit.
Replace heater unit.
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, rotor and
dehumidification fan do not
run.
(R9456)
157