BoilerFaultCodes E 51 Medium
Boiler Fault Code E 51
Also written as E51 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E 51 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 blocked your attempts to restart it because the reset button was pressed too many times in a row. (As reported on Vokera Verve I 50)
Pick your boiler brand for the E 51 fix
Source
Information for the E 51 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