BoilerFaultCodes 17E High
Boiler Fault Code 17E
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 17E appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has lost the ability to accurately measure the temperature of the water circulating inside it, so it has safely shut down to prevent overheating. (As reported on Biasi Concept 400 20 1 Mfs)
Pick your boiler brand for the 17E fix
Source
Information for the 17E 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