Daikin | Chiller

Error Code 78

Troubleshooting guide for the Daikin Chiller system fault 78.

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

System No. 2 Malfunction of fan inter lock

Potential Causes & Solutions

  • Defective relay contact.
  • Broken wire.

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