High Pressure Switch Open Event 31

What does 31 mean?

The high pressure switch has opened, indicating a high pressure event within the system. The system will attempt to self-mitigate. Persistent high pressure conditions will lead to a lockout (Error Code 84). The system will reset after 15 minutes.

• High Pressure Event

Click steps to track your progress.

1. 1

   The system will attempt to self-mitigate the high pressure condition over 15 minutes.

2. 2

   Check the refrigerant charge level in the system.

3. 3

   Inspect the outdoor fan operation and the outdoor coil for any airflow restrictions, especially in cooling mode.

4. 4

   Check the indoor airflow for restrictions if the unit is in heating mode.