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Troubleshooting
SiBE041525F
73
Service Diagnosis
4.19 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 voltage between the both ends of the thermistor is above 4.96 V or below 0.04 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
Thermistor corresponding to the error code is defective.
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
Troubleshooting
In case of
P4
Replace the outdoor unit PCB (main PCB).
P4
: Radiation fin thermistor
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Summary of Contents for ARX20K2V1B
Page 12: ...SiBE041525F 1 List of Functions Part 1 List of Functions 1 Functions 2 ...
Page 15: ...SiBE041525F Specifications 4 Part 2 Specifications 1 Specifications 5 ...
Page 16: ...Specifications SiBE041525F 5 Specifications 1 Specifications See corresponding databook ...
Page 51: ...SiBE041525F Remote Controller 40 Part 5 Remote Controller 1 Remote Controller 41 ...