BoilerFaultCodes E9 276 High
Boiler Fault Code E9 276
Also written as E9276 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E9 276 appears across 1 boiler brand and 12 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has shut down because the water inside it has become dangerously hot and reached a level that risks damaging the internal components. (As reported on Worcester Bosch Junior 28i)
Pick your boiler brand for the E9 276 fix
Source
Information for the E9 276 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