E117 Medium

Boiler Fault Code E117

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E117 appears across 3 boiler brands and 25 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 there is too much water pressure in the system, which can cause it to shut down for safety. (As reported on Baxi Duo-tec Combi)

Pick your boiler brand for the E117 fix

Baxi E117 23 models Main E117 1 model Potterton E117 1 model

Source

Information for the E117 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