L E High

Boiler Fault Code L E

Also written as LE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code L E appears across 2 boiler brands and 8 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal computer is experiencing a communication error and cannot safely manage the heating process, causing the system to shut down. (As reported on Ideal Isar HE)

Pick your boiler brand for the L E fix

Evo L E 1 model Ideal L E 7 models

Source

Information for the L 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 7 July 2026