BoilerFaultCodes AIR FLOW DEVICE High
Boiler Fault Code AIR FLOW DEVICE
Also written as AIRFLOWDEVICE — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code AIR FLOW DEVICE 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 detected an issue with the internal fan or the way it clears exhaust gases, so it has shut down to keep you safe. (As reported on Worcester Bosch 24i RSF)
Pick your boiler brand for the AIR FLOW DEVICE fix
Source
Information for the AIR FLOW DEVICE 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