How much does it cost to fix boiler error code Burner control box lockout light lit?

Typical repair cost for the boiler Burner control box lockout light lit fault is £100-250 including labour.

Burner control box lockout light lit High

Boiler Fault Code Burner control box lockout light lit

Also written as BURNERCONTROLBOXLOCKOUTLIGHTLIT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code Burner control box lockout light lit appears across 2 boiler brands and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's burner has stopped running for safety reasons, which usually means it tried to fire up but couldn't detect a flame. (As reported on Warmflow B-series and Bluebird)

Pick your boiler brand for the Burner control box lockout light lit fix

Firebird Burner control box lockout light lit 1 model Warmflow Burner control box lockout light lit 3 models

Source

Information for the Burner control box lockout light lit 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