E26 High

Boiler Fault Code E26

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E26 appears across 8 boiler brands and 23 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to keep its flame lit, which often happens because the drainage pipe is blocked or frozen, or there is an issue with the air supply. (As reported on Keston C36)

Pick your boiler brand for the E26 fix

Ariston E26 2 models Baxi E26 2 models Biasi E26 5 models Ferroli E26 1 model Keston E26 9 models Remeha E26 1 model Saunier Duval E26 2 models Vokera E26 1 model

Source

Information for the E26 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