BoilerFaultCodes E01 373 High
Boiler Fault Code E01 373
Also written as E01373 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E01 373 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 failed to ignite or stay lit, meaning it cannot produce heat or hot water because it has detected a problem with the flame or gas supply. (As reported on Ideal Mexico Super 100FF / 125FF)
Pick your boiler brand for the E01 373 fix
Source
Information for the E01 373 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