Low Information
38:0 on Viessmann Vitodens 100-W / 200-W

Your boiler is reporting a normal status update rather than a failure, indicating that the internal burner control system is currently operating correctly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Burner control unit state (0=burner control unit OK)

What causes this fault?

This code appears as a status communication between the boiler's internal computer and the burner system. It indicates that the self-testing sequence has been completed successfully and the burner control unit is functioning exactly as it should. Because this is a positive status update rather than a malfunction, your boiler has not actually stopped working.

DIY fix possible

Check if the display returns to the home screen manuallyPerform a simple reset if the code persists on the displayMonitor for any other numerical codes that may appear alongside it

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