BoilerFaultCodes E39 High
Boiler Fault Code E39
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E39 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 lost connection with a safety sensor that monitors the temperature of the exhaust gases, causing the system to shut down for protection. (As reported on Vokera Condexa Pro)
Pick your boiler brand for the E39 fix
Source
Information for the E39 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