Low
d.22 on Vaillant ecoTEC plus System

Your boiler is currently monitoring your hot water system and is simply indicating that no hot water is being requested at this moment.

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 hot water request: off=No current requirement, on=Current requirement

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.21View →d.23View →d.24View →

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