Daikin | SkyAir

Error Code E3

Troubleshooting guide for the Daikin SkyAir system fault E3.

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

Actuation of high pressure switch (HPS)

Potential Causes & Solutions

  • Dirty outdoor unit heat exchanger.
  • Defective high pressure switch.
  • Clogged refrigerant piping.
  • Defective connector contact.

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