Error 01 + RESET High
Boiler Fault Code Error 01 + RESET
Also written as ERROR01RESET — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Error 01 + 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 failed to light the flame and has locked itself out for safety. (As reported on Johnson Starley Warmcair DW)
Pick your boiler brand for the Error 01 + RESET fix
Source
Information for the Error 01 + 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