Low
d.45 on Vaillant ecoFIT pure

This is a settings menu display rather than a fault, showing the starting temperature point for your heating system's weather compensation.

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

Value for the base point of the heating curve

DIY fix possible

Press the 'Back' or 'Menu' button to exit the diagnostic settingsIf you accidentally changed the value, restore it to the default (typically 20°C or 21°C)Contact your installer if your radiators are not getting warm enough in cold weather

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Related fault codes

d.43View →d.47View →

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