Daikin VRV

Daikin VRV Error Code CJ

Troubleshooting guide for the Daikin VRV system fault CJ.

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What It Means

Room temperature thermistor in remote controller abnormality.

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

  1. Confirm the exact Daikin model family and vrv context before acting on a generic code description.
  2. Verify the sensor or thermistor reading against the expected range for the current operating condition, keeping in mind that defective room temperature thermistor in remote controller Defective remote controller PCB.
  3. Check the sensor harness and board connection before condemning the sensor itself; on Daikin units this is also where you'd confirm external factor (Noise etc.).
  4. After the correction, run the system long enough to confirm the vrv fault does not return under normal load.

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