BoilerFaultCodes C7 217 High
Boiler Fault Code C7 217
Also written as C7217 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code C7 217 appears across 1 boiler brand and 11 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has shut down because the internal fan, which safely clears waste gases from the system, has suddenly stopped working while the boiler was running. (As reported on Worcester Bosch 26 CDi Xtra)
Pick your boiler brand for the C7 217 fix
Source
Information for the C7 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 27 April 2026