BoilerFaultCodes E11 High
Boiler Fault Code E11
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E11 appears across 15 boiler brands and 54 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has stopped working because its internal sensors are reporting conflicting temperature readings that don't match up during a self-test. (As reported on Keston C36)
Pick your boiler brand for the E11 fix
Alpha E11 1 model Ariston E11 2 models Atag E11 1 model Baxi E11 1 model Biasi E11 10 models Halstead E11 6 models Heatline E11 2 models Intergas E11 6 models Johnson Starley E11 1 model Keston E11 9 models Potterton E11 2 models Remeha E11 8 models Viessmann E11 1 model Vokera E11 3 models Warmhaus E11 1 model
Source
Information for the E11 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 27 April 2026