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SiBE041525F
Troubleshooting
Service Diagnosis
54
4.5
Thermistor or Related Abnormality (Indoor Unit)
Error Code
C4
,
C9
Method of Error
Detection
The temperatures detected by the thermistors determine thermistor errors.
Error Decision
Conditions
The voltage between the both ends of the thermistor is 4.96 V and more or 0.04 V and less
during compressor operation.
Supposed
Causes
Disconnection of connector
Thermistor corresponding to the error code is defective.
Defective indoor unit PCB
Troubleshooting
Check No.01
Refer to P.79
C4
: Indoor heat exchanger thermistor
C9
: Room temperature thermistor
YES
(R21870)
NO
Check No. 01
Check the thermistor resistance
value.
YES
NO
Caution
Correct the connection.
Replace the defective
thermistor.
Replace the indoor unit PCB
(control PCB).
Normal?
Normal?
Check the connection of
connectors.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Содержание ARX20K2V1B
Страница 12: ...SiBE041525F 1 List of Functions Part 1 List of Functions 1 Functions 2 ...
Страница 15: ...SiBE041525F Specifications 4 Part 2 Specifications 1 Specifications 5 ...
Страница 16: ...Specifications SiBE041525F 5 Specifications 1 Specifications See corresponding databook ...
Страница 51: ...SiBE041525F Remote Controller 40 Part 5 Remote Controller 1 Remote Controller 41 ...