BoilerFaultCodes E03-885 High
Boiler Fault Code E03-885
Also written as E03885 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E03-885 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 encountered a complex electrical communication error where its internal components cannot correctly identify how they are wired together. (As reported on Keston K170)
Pick your boiler brand for the E03-885 fix
Source
Information for the E03-885 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