Medium
d.64 on Vaillant ecoFIT pure

Your boiler is taking longer than expected to light the burner, which may lead to intermittent heating or noise issues.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Average burner ignition time

Engineer required

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

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Related fault codes

F.28View →F.29View →

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