BoilerFaultCodes En High
Boiler Fault Code En
Also written as EN — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code En 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 one of its internal sensors is sending an incorrect signal or has failed, which is preventing the system from operating correctly. (As reported on Gledhill GB35C)
Pick your boiler brand for the En fix
Source
Information for the En 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