BoilerFaultCodes Fault on gas supply High
Boiler Fault Code Fault on gas supply
Also written as FAULTONGASSUPPLY — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fault on gas supply 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 has stopped working because it cannot detect a steady flow of gas, which has caused it to shut down for safety. (As reported on Biasi Basica Combi)
Pick your boiler brand for the Fault on gas supply fix
Source
Information for the Fault on gas supply 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