BoilerFaultCodes Burner Lockout High
Boiler Fault Code Burner Lockout
Also written as BURNERLOCKOUT — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Burner Lockout appears across 2 boiler brands and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has stopped itself from running due to an internal safety concern, meaning it will not produce heat or hot water until the ignition system is reset or repaired. (As reported on Firebird S Range)
Pick your boiler brand for the Burner Lockout fix
Source
Information for the Burner Lockout 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