System Diagnosis
Improper combination of indoor and outdoor units
Daikin | Packaged
Error Code UA
Troubleshooting guide for the Daikin Packaged system fault UA.
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.
Potential Causes & Solutions
- Excess of connected indoor units.
- Defective outdoor unit PCB.
- Mismatch of the refrigerant type of indoor and outdoor unit Setting of outdoor unit PCB was not carried out after replacing to spare PCB.
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