13 — Hydraulic differential pressure switch contacts stuck

What does 13 mean?

The contacts of the hydraulic differential pressure switch are stuck, preventing proper operation. This can lead to issues with water pressure detection and boiler function.

• Stuck pressure switch contacts
• Same underlying issues as a switching failure (Code 12)

Click steps to track your progress.

1. 1

   Press and hold down the Reset button for 2 seconds to try clearing the fault.

2. 2

   Check the boiler's pressure gauge to ensure the system pressure is within the normal range.

3. 3

   If the fault persists, contact an Authorised Service Centre for a professional inspection.