Low
d.14 on Vaillant ecoFIT Pure 830

Your boiler is notifying you that it needs to recalibrate how fast it moves water through your heating system to ensure your home warms up efficiently.

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

Set the pump speed/output

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

d.14View →F.75View →

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