Viessmann · Vitodens 200-W Boilers
The burner is in an error state because the stabilization conditions required after calibration were not met, possibly due to an incorrect gas type setting or an issue with the Burner Control Unit.
Click steps to track your progress.
Reset the appliance.
If the fault persists, contact a qualified technician to check the gas type setting and potentially replace the BCU burner control unit.
Ensure the appliance has been reset correctly after the initial fault.