Daikin | SkyAir

Error Code H9

Troubleshooting guide for the Daikin SkyAir system fault H9.

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 outdoor air thermistor

Potential Causes & Solutions

  • Defective connection of thermistor.
  • Defective outdoor unit PCB.
  • Defective outdoor air thermistor.

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