What does PC31 mean?

The refrigerant system pressure has dropped too low, triggering a protective shutdown. This often indicates a lack of refrigerant or a restriction.

• Low refrigerant charge (leak)
• Restriction in the refrigerant flow
• Faulty pressure sensor
• Incorrect expansion valve operation

Click steps to track your progress.

1. 1

   Inspect for signs of refrigerant leaks.

2. 2

   Ensure all refrigerant lines are clear and not restricted.

3. 3

   A qualified technician needs to check refrigerant levels and diagnose potential restrictions or sensor issues.