UE - High pressure error (ball valve closed)

What does UE mean?

A high-pressure error has occurred, specifically indicating that a ball valve is closed, restricting refrigerant flow. This causes pressure to build up in the system.

• Service ball valve accidentally left closed.
• Malfunctioning ball valve.

Click steps to track your progress.

1. 1

   Turn off the air conditioning unit.

2. 2

   If you are a qualified installer, verify that all refrigerant ball valves are fully open. Do not attempt if unsure.

3. 3

   Wait 30 minutes before restarting the unit.

4. 4

   If the error reappears, contact a certified technician to inspect the valves and refrigerant system.