BoilerFaultCodes Faulty air pressure switch High
Boiler Fault Code Faulty air pressure switch
Also written as FAULTYAIRPRESSURESWITCH — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Faulty air pressure switch appears across 2 boiler brands and 7 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 confirm it is venting exhaust gases safely, so it has stopped working to prevent any risk. (As reported on Ideal Mini HE)
Pick your boiler brand for the Faulty air pressure switch fix
Source
Information for the Faulty air pressure switch 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