b1 — Coding plug not recognized by the circuit board

What does b1 mean?

The boiler's main circuit board cannot detect the coding plug. This plug is essential for the boiler to operate correctly and interpret its settings.

• Coding plug is not inserted correctly.
• Coding plug is faulty or damaged.
• Issue with the main printed circuit board.

Click steps to track your progress.

1. 1

   Check if the coding plug is inserted correctly and fully seated into the circuit board.

2. 2

   If you have access to a multimeter and know how to use it, measure the coding plug's resistance to check its integrity.

3. 3

   Replace the coding plug if it is found to be faulty or damaged.

4. 4

   If the problem persists after checking and replacing the plug, the circuit board may need professional inspection or replacement.