BoilerFaultCodes 117 Medium
Boiler Fault Code 117
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 117 appears across 2 boiler brands and 33 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has too much water in the system, which puts extra stress on the internal parts and may cause it to shut down for safety. (As reported on Baxi EcoBlue)
Pick your boiler brand for the 117 fix
Source
Information for the 117 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