E7 High

Boiler Fault Code E7

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E7 appears across 3 boiler brands and 5 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 a problem with its internal water circulation system, meaning it cannot effectively move heat to your radiators or taps. (As reported on Sime Murelle HE Regular)

Pick your boiler brand for the E7 fix

Sime E7 2 models Viessmann E7 2 models Worcester Bosch E7 1 model

Source

Information for the E7 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