Buderus · Logamax plus Boilers
The system has detected an insufficient ionization current while the burner should be operating normally. This means the flame is not stable or has gone out during operation. This is a blocking fault, requiring a manual reset.
Click steps to track your progress.
Press the 'Reset' button on the BC10 basic controller.
Ensure the gas supply to the boiler is consistent and not interrupted.
If the fault persists, contact a qualified service technician to inspect the burner and gas supply components.