Daikin | VRV

Error Code A3

Troubleshooting guide for the Daikin VRV system fault A3.

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.

System Diagnosis

Drain Level Control System Abnormality

Potential Causes & Solutions

  • Drain clogging, upward slope, etc.
  • Defective drain pump.
  • Defective float switch or short circuit connector.

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