Low
d.31 on Vaillant ecoFIT Pure 418

Your boiler is currently set to a specific mode for how it refills with water, and this code is simply an information setting rather than a breakdown.

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

Automatic filling device (0=Manual, 1=Semi-automatic, 2=Automatic)

DIY fix possible

Press the 'Menu' button on the control panelUse the arrow keys to navigate to the 'Live Monitor' or 'Diagnostic' settingsIdentify if the setting matches your preferred filling method (usually manual for most UK homes)

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F.22View →F.24View →

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