Daikin | Chiller

Error Code U0

Troubleshooting guide for the Daikin Chiller system fault U0.

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

Shortage of refrigeran

Potential Causes & Solutions

  • Refrigerant shortage and refrigerant clogging (wrong piping).
  • Defective thermistor.
  • Defective low pressure sensor.
  • Defective outdoor unit main PCB.

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