Daikin | SkyAir

Error Code L9

Troubleshooting guide for the Daikin SkyAir system fault L9.

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 inverter compressor startup error (Stall prevention)

Potential Causes & Solutions

  • The stop valve is not opened.
  • Defective compressor.
  • Error in wire connections to compressor.
  • Large differential pressure before compressor startup Defective inverter PCB.

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