Daikin VRV

Daikin VRV Error Code J2

Troubleshooting guide for the Daikin VRV system fault J2.

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What It Means

Malfunction of current sensor of compressor.

Possible Causes

  • Defective current sensor.
  • Defective compressor.
  • Defective outdoor unit PCB.

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

Malfunction of current sensor of compressor

All Recorded Causes

Defective current sensor Defective compressor Defective outdoor unit PCB

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 current sensor.
  3. Check the sensor harness and board connection before condemning the sensor itself; on Daikin units this is also where you'd confirm defective compressor.
  4. After the correction, run the system long enough to confirm the vrv fault does not return under normal load.

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