Section E High

Boiler Fault Code Section E

Also written as SECTIONE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Section E appears across 2 boiler brands 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 issue with how it extracts exhaust fumes, often caused by a blocked pipe or a sensor problem, and has shut down as a safety precaution. (As reported on Baxi System)

Pick your boiler brand for the Section E fix

Source

Information for the Section E 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