Buderus · Logamax plus Boilers
The boiler's fan is operating at an excessively high speed. This can indicate a control issue or a sensor problem. Heating operation and domestic hot water are unavailable. 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 there are no other active error codes that might influence fan speed.
If the fault reoccurs, contact a qualified service technician to diagnose the fan control system.