Daikin | Packaged

Error Code A5

Troubleshooting guide for the Daikin Packaged system fault A5.

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

High pressure control in heating, freeze-up protection control in cooling

Potential Causes & Solutions

  • Clogged air filter of indoor unit and short circuit.
  • Defect of indoor unit heat exchanger thermistor.

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