BoilerFaultCodes Burner air ports blocked Emergency
Boiler Fault Code Burner air ports blocked
Also written as BURNERAIRPORTSBLOCKED — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Burner air ports blocked 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 is struggling to breathe because the vents that pull in air for the flame have become clogged with debris or dust, preventing it from starting safely. (As reported on Ferroli Sigma 40 FF)
Pick your boiler brand for the Burner air ports blocked fix
Source
Information for the Burner air ports blocked 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