Humidification Fan Outlet Thermistor Abnormality / Heater Temperature Abnormality - Daikin CTXU25G2V1B Service Manual

Troubleshooting
2.37 Humidification Fan Outlet Thermistor Abnormality /
Heater Temperature Abnormality
PH
Remote
Controller Display
Outdoor Unit LED A5
Display
Method of Detect short circuit and wire breakage of humidification thermistor.
When humidification fan outlet temperature becomes high, this condition is identified as an
Malfunction
abnormal heater temperature fault.
Detection
Malfunction When power is supplied and the thermistor input is 4.92 V or more, or 0.06 V or less.
If the humidification fan outlet temperature is more than 90°C, this condition is identified as
Decision
abnormal heater temperature fault.
Conditions
Supposed
Causes
158
55
Short circuit and wire breakage of humidification thermistor
Disconnected connector
Heater has a high power
Thermistor temperature detection error
Defective rotor motor
Defective hygroscopic fan motor
Defective heater control part
Defective humidification fan
SiBE12-908
Service Diagnosis