BoilerFaultCodes E039 High
Boiler Fault Code E039
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E039 appears across 1 boiler brand and 3 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 unusual flame signal, which means it cannot safely confirm if the gas is burning correctly and has shut down as a precaution. (As reported on Vokera Pinnacle Combi)
Pick your boiler brand for the E039 fix
Source
Information for the E039 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