Thermistor Or Related Abnormality - Daikin CTXG09QVJUW Service Manual
Multi-split type air conditioners 2/3/4mxs-n series
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- Service manual (254 pages) ,
- Operation manual (116 pages) ,
- Engineering data (661 pages)
Table of Contents
SiUS121630EA
5.4
Thermistor or Related Abnormality
C4 , C9
Error Code
Method of Error
The temperatures detected by the thermistors determine thermistor errors.
Detection
Error Decision
The voltage between the both ends of the thermistor is either 4.96 V or more, or 0.04 V or less with
the power on.
Conditions
Supposed
Causes
Troubleshooting
Check No.01
Refer to P.191
C4
C9
Note:
When replacing the defective thermistor(s), replace the thermistors as ASSY.
Service Diagnosis
Disconnection of connector
Thermistor corresponding to the error code is defective.
Defective indoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the connection of
connectors.
Normal?
YES
Check No. 01
Check the thermistor resistance
value.
Normal?
YES
: Indoor heat exchanger thermistor
: Room temperature thermistor
Troubleshooting for CTXG, CTXS, FTXS, CDXS, FDXS, FVXS Series
NO
NO
Correct the connection.
Replace the defective
thermistor.
Replace the indoor unit PCB
(control PCB).
(R21870)
143
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