Daikin | SkyAir

Error Code P4

Troubleshooting guide for the Daikin SkyAir system fault P4.

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 radiation fin temperature sensor

Potential Causes & Solutions

  • Defective radiation fin temperature thermistor.
  • Defective inverter PCB.
  • Defective INV. compressor.
  • Defective fan motor.

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