SE Low

Boiler Fault Code SE

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code SE appears across 4 boiler brands and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is simply reminding you that its annual service is due soon; it is a notification rather than a breakdown. (As reported on Ideal Logic Combi C24 C30 C35)

Pick your boiler brand for the SE fix

Ideal SE 1 model Sime SE 1 model Worcester Bosch SE 1 model Zanussi SE 3 models

Source

Information for the SE 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 31 August 2026