F.032 High

Vaillant F.032 Fault Code

Also written as F032 — same fault.

The Vaillant F.032 fault code means: your boiler has detected that the internal fan responsible for safely venting exhaust gases is not spinning at the correct speed or is failing to communicate with the main control board.. 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: Fault in the electrical connection for the fan. Fan speed is outside of the tolerance.
Typical repair cost £180-350 (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.032 fault code

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

Source

Vaillant F.032 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