UE - High pressure error (ball valve closed) in outdoor unit

What does UE mean?

This error code signifies a high-pressure condition in the outdoor unit, specifically linked to a closed ball valve.

• One or more ball valves (service valves) on the outdoor unit are closed.
• System overcharged with refrigerant.
• Restricted refrigerant flow due to a closed valve.

Click steps to track your progress.

1. 1

   Turn off the power to the air conditioner at the main circuit breaker.

2. 2

   Have a qualified HVAC technician inspect the outdoor unit's service valves to ensure they are fully open.

3. 3

   The technician should also check refrigerant pressure.

4. 4

   Only restore power after the valve position has been corrected by a professional.