Low
d4:0 on Viessmann Vitodens 200

Your boiler's heating control settings have been reset to zero, meaning it does not currently know it needs to provide heating to your home.

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

Heating curve level = 0

DIY fix possible

Access the boiler control panel menuNavigate to the Heating Curve settingsAdjust the 'Level' or 'Shift' parameter to your desired comfort setting to reactivate the heating schedule

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