Daikin | SkyAir

Error Code U2

Troubleshooting guide for the Daikin SkyAir system fault U2.

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

Malfunction of power supply or instantaneous power failure

Potential Causes & Solutions

  • Abnormal power supply voltage.
  • Instantaneous power failure.
  • Defective main circuit wiring.

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