Buderus · Logamax plus Boilers
After the burner starts, the flow temperature sensor has not detected any increase in the heating system's water temperature. This indicates a problem with heat transfer. As a locking fault, the boiler will try to clear itself.
Click steps to track your progress.
Check for any air locks in the system, potentially by bleeding radiators if applicable.
Allow the boiler to attempt an automatic reset.
If the fault persists, contact a qualified service technician to check the pump and sensors.