Low
d.11 on Vaillant ecoFIT Pure 418

Your boiler is providing an update on the operation of the external pump that helps circulate water through your heating system, though this is often an information code rather than a breakthrough failure.

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

Status of the heating circuit's shunt pump

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.10View →F.75View →

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