BoilerFaultCodes 217 High
Boiler Fault Code 217
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 217 appears across 2 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 one of its internal temperature sensors, which means it cannot monitor heat levels safely and has stopped working. (As reported on ECA FELiS FL 50 HM)
Pick your boiler brand for the 217 fix
Source
Information for the 217 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