Daikin FTXR42EV1B9 Especificaciones Pagina 132

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Troubleshooting SiBE04-624_B
122 Service Diagnosis
2.34 Thermistor or Related Abnormality (Outdoor Unit)
Error Code
H9, J3, J6, P4
Method of Error
Detection
This fault is identified based on the thermistor input voltage to the microcomputer.
A thermistor fault is identified based on the temperature sensed by each thermistor.
Error Decision
Conditions
The thermistor input is above 4.98 V or below 0.02 V with the power on.
J3 error is judged if the discharge pipe temperature is lower than the heat exchanger
temperature.
Supposed
Causes
Disconnection of the connector for the thermistor
Defective thermistor corresponding to the error code
Defective heat exchanger thermistor in the case of J3 error (outdoor heat exchanger
thermistor in cooling operation, or indoor heat exchanger thermistor in heating operation)
Defective outdoor unit PCB
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