BoilerFaultCodes E03-827 High
Boiler Fault Code E03-827
Also written as E03827 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E03-827 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's air extraction system is not operating correctly, which prevents the unit from starting the ignition process to keep you safe. (As reported on Potterton Kingfisher MF RSL)
Pick your boiler brand for the E03-827 fix
Source
Information for the E03-827 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