BoilerFaultCodes Gas supply fault High
Boiler Fault Code Gas supply fault
Also written as GASSUPPLYFAULT — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Gas supply fault appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is not receiving enough gas to light the flame or keep it running safely. (As reported on Biasi Antares Combi)
Pick your boiler brand for the Gas supply fault fix
Source
Information for the Gas supply fault 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