Daikin | Split/ Multi Split

Error Code L3

Troubleshooting guide for the Daikin Split/ Multi Split system fault L3.

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

El.compo. box temperature rise

Potential Causes & Solutions

  • Fin temperature rise due to short circuit.
  • Defective outdoor unit fan motor.
  • Defective power transistor.
  • Defective outdoor unit PCB.

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