F.682 High

Viessmann F.682 Fault Code

Also written as F682 — same fault.

The Viessmann F.682 fault code means: your boiler has stopped working because it cannot properly measure the amount of air required for safe combustion.. It appears on 2 Viessmann 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: Burner in a fault state. Air mass flow rate sensor not available.
Typical repair cost £250-450 (including labour)

Engineer required

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

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Viessmann models that show the F.682 fault code

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

Source

Viessmann F.682 fault code information on this page is sourced and cross-checked against the official Viessmann service / installation manuals for each affected model.

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