F.092 High

Vaillant F.092 Fault Code

Also written as F092 — same fault.

The Vaillant F.092 fault code means: your boiler has detected that the settings controlling how it uses gas were not finalized correctly during its last setup or maintenance, which prevents it from firing up safely.. It appears on 3 Vaillant models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: The gas-type conversion was not completed correctly.
Typical repair cost £120-250 (including labour)

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 F.092 fault code

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

Source

Vaillant F.092 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