Blocking fault 6/y/ (2/0/3) - Ionization current too high

What does 6/y/ mean?

The ionization current is excessively high, which can indicate a fault with the flame sensing or control system. Heating and domestic hot water are unavailable. This is a blocking fault, requiring a manual reset.

• Faulty ionization electrode
• Control board issue

Click steps to track your progress.

1. 1

   Press the 'Reset' button on the BC10 basic controller.

2. 2

   Observe if the fault clears and normal operation resumes after reset.

3. 3

   If the problem continues, contact a qualified service technician to inspect the ionization electrode and control unit.