Daikin Chiller

Daikin Chiller Error Code E6

Troubleshooting guide for the Daikin Chiller system fault E6.

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What It Means

System No.1 Compressor overcurrent.

Possible Causes

  • Defective electronic expansion valve.
  • Shortage of refrigerant amount.
  • Defective compressor.

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

System No.1 Compressor overcurrent

All Recorded Causes

Defective electronic expansion valve Shortage of refrigerant amount Defective compressor

Verify Before Replacing Parts

  1. Confirm the exact Daikin model family and chiller context before acting on a generic code description.
  2. Verify airflow first, then confirm operating pressures and temperature relationship before adjusting charge, since defective electronic expansion valve.
  3. Look for restrictions, iced coils, or dirty heat-transfer surfaces that can mimic a charge problem, and separately confirm shortage of refrigerant amount.
  4. After the correction, run the system long enough to confirm the chiller fault does not return under normal load.

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