BoilerFaultCodes E 23 Emergency
Boiler Fault Code E 23
Also written as E23 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E 23 appears across 2 boiler brands and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has detected an issue with its electrical earthing system, which is a safety feature designed to prevent electric shocks. (As reported on Vokera Verve I 50)
Pick your boiler brand for the E 23 fix
Source
Information for the E 23 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 7 July 2026