D.094 Low

Vaillant D.094 Fault Code

Also written as D094 — same fault.

The Vaillant D.094 fault code means: this code is not a fault, but rather a system instruction being performed to clear the memory of previous error messages from your boiler's display.. It appears on 7 Vaillant models in our database.

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: Delete fault history

Engineer required

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

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Vaillant models that show the D.094 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Vaillant D.094 fault code information on this page is sourced and cross-checked against the official Vaillant service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026