1 - IGNITION FAILURE High

Boiler Fault Code 1 - IGNITION FAILURE

Also written as 1IGNITIONFAILURE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 1 - IGNITION FAILURE appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is trying to start but cannot get the flame to stay lit, so it has safely shut itself down to avoid wasting fuel. (As reported on Ariston Genus Premium)

Pick your boiler brand for the 1 - IGNITION FAILURE fix

Source

Information for the 1 - IGNITION FAILURE 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 7 July 2026