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 2 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 an issue with the internal airflow system, which means it has safely shut itself down to prevent it from operating incorrectly. (As reported on Worcester Bosch Greenstar Ri)
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 7 July 2026