BoilerFaultCodes E23 + RESET High
Boiler Fault Code E23 + RESET
Also written as E23RESET — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E23 + RESET 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 safely detect or control the gas supply, causing it to lock itself for safety. (As reported on Biasi Inovia 2020)
Pick your boiler brand for the E23 + RESET fix
Source
Information for the E23 + RESET 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