BoilerFaultCodes 284 High
Boiler Fault Code 284
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 284 appears across 1 boiler brand and 21 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 deliver the correct mix of air and gas required to light the burner safely. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 284 fix
Source
Information for the 284 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