ER 05 + RESET High

Boiler Fault Code ER 05 + RESET

Also written as ER05RESET — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code ER 05 + 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 the internal fan used for safe combustion is not spinning or cannot be detected by the system control board. (As reported on Johnson Starley Warmcair DW)

Pick your boiler brand for the ER 05 + RESET fix

Johnson Starley ER 05 + RESET 1 model

Source

Information for the ER 05 + 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