Low
d.00 on Vaillant ecoFIT Pure 418

This is a settings status rather than a fault, indicating the maximum amount of heat the boiler is currently allowed to produce for your radiators.

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

Heating maximum 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.01View →d.02View →

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