A 19 Emergency

Vokera A 19 Fault Code

Also written as A19 — same fault.

The Vokera A 19 fault code means: your boiler has detected that a flame is still burning inside even though it has commanded the gas supply to turn off.. It appears on 1 Vokera model in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: The presence of a flame is detected more than 10 seconds after the closure of the gas valve.
Typical repair cost £150-300 (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 A 19 fault code

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

Source

Vokera A 19 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