BoilerFaultCodes 22 + Emergency
Boiler Fault Code 22 +
Also written as 22 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 22 + 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 has detected a flame that continues to burn even after the gas valve should have closed, which is a safety fault that requires a professional inspection. (As reported on Biasi Antares Combi)
Pick your boiler brand for the 22 + fix
Source
Information for the 22 + 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