BoilerFaultCodes E03-887 High
Boiler Fault Code E03-887
Also written as E03887 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E03-887 appears across 1 boiler brand 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 the gas flow or the internal component that delivers fuel to the burner, meaning it cannot ignite safely. (As reported on Keston K170)
Pick your boiler brand for the E03-887 fix
Source
Information for the E03-887 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