Daikin | Heat Reclaim Ventilator

Error Code UF

Troubleshooting guide for the Daikin Heat Reclaim Ventilator system fault UF.

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 is not set yet

Potential Causes & Solutions

  • Improper connection of transmission wiring between indoor-outdoor units and outdoor-outdoor units.
  • Failure to execute check operation.
  • Defective indoor unit PCB.
  • Stop valve is not opened.

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