BoilerFaultCodes E5 218 High
Boiler Fault Code E5 218
Also written as E5218 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E5 218 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 detected that the water inside the unit is getting too hot, so it has safely shut itself down to prevent any damage. (As reported on Worcester Bosch Greenstar 12i System)
Pick your boiler brand for the E5 218 fix
Source
Information for the E5 218 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