U2 - Abnormal high discharging temperature

What does U2-1 mean?

The outdoor unit has detected an abnormally high discharge temperature. This often indicates the system is working under strain, possibly due to blockages or low refrigerant.

• Blocked outdoor unit condenser coil.
• Insufficient refrigerant.
• Faulty outdoor fan motor.

Click steps to track your progress.

1. 1

   Turn off the air conditioning unit and allow it to cool down for an hour.

2. 2

   Visually inspect the outdoor unit for any debris or obstructions and clear them.

3. 3

   Ensure indoor unit air filters are clean.

4. 4

   If the error persists, contact a qualified technician to check refrigerant levels and fan operation.