What It Means
Room temperature thermistor in remote controller abnormality.
Daikin Fan Coil
Daikin Fan Coil Error Code CJ
Troubleshooting guide for the Daikin Fan Coil system fault CJ.
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Possible Causes
- Defective room temperature thermistor in remote controller Defective remote controller PCB.
- External factor (Noise etc.).
Not sure which one it is — or if it's none of these? Try ACLogics today.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
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Full Diagnosis
Room temperature thermistor in remote controller abnormality
All Recorded Causes
Defective room temperature thermistor in remote controller Defective remote controller PCB External factor (Noise etc.)
Verify Before Replacing Parts
- Confirm the exact Daikin model family and fan coil context before acting on a generic code description.
- Confirm filter condition, blower operation, and coil cleanliness before replacing any controls — start by ruling out whether defective room temperature thermistor in remote controller Defective remote controller PCB.
- Measure airflow-related readings that match the symptom, such as temperature split or static pressure, and check whether external factor (Noise etc.).
- After the correction, run the system long enough to confirm the fan coil fault does not return under normal load.
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