BoilerFaultCodes 5911 High
Boiler Fault Code 5911
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 5911 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 detected that the internal fan responsible for safely removing exhaust gases is not operating correctly, so it has shut down to prevent any risk. (As reported on Vokera Maxin)
Pick your boiler brand for the 5911 fix
Source
Information for the 5911 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