Blocking fault 6/p/ (2/6/9) - Insufficient ionization current during operating phase

What does 6/p/ mean?

The boiler has detected an insufficient ionization current during its normal operating phase, meaning the flame is not stable or has failed. This stops heating and domestic hot water. This is a blocking fault, requiring a manual reset.

• Unstable gas supply
• Dirty burner
• Faulty ionization probe
• Poor combustion

Click steps to track your progress.

1. 1

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

2. 2

   Ensure the gas isolation valve for the boiler is fully open.

3. 3

   If the fault reoccurs, contact a qualified service technician to inspect the burner, gas supply, and ionization electrode.