Burner Lockdown High
Boiler Fault Code Burner Lockdown
Also written as BURNERLOCKDOWN — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Burner Lockdown 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 stopped working because it cannot light the gas needed to create heat, often due to an ignition or sensor failure. (As reported on Worcester Bosch 24CDi BF)
Pick your boiler brand for the Burner Lockdown fix
Source
Information for the Burner Lockdown 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