A2 High

Vokera A2 Fault Code

The Vokera A2 fault code means: your boiler is not working because it has detected an issue with the air flowing into or the gases flowing out of the unit, which has caused it to shut down for safety.. It appears on 1 Vokera model 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 code A2
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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Vokera models that show the A2 fault code

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

Source

Vokera A2 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.

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