How much does it cost to fix boiler error code A19?

Typical repair cost for the boiler A19 fault is £150-450 including labour.

A19 Emergency

Boiler Fault Code A19

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code A19 appears across 3 boiler brands and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has shut down and is running the fan at full speed because the exhaust gases have become dangerously hot. (As reported on Vokera Condexa Pro)

Pick your boiler brand for the A19 fix

Ariston A19 3 models Potterton A19 1 model Vokera A19 1 model

Source

Information for the A19 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026