BoilerFaultCodesFirebird Burner Lockout Fault Code
Also written as BURNERLOCKOUT — same fault.
The Firebird Burner Lockout fault code means: 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.. It appears on 4 Firebird models in our database.
Technical description: Burner control box lockout safety feature which operates automatically if a fault occurs in the burners operation. Light on the front of the burner will illuminate.
DIY fix possible
Check your oil tank to ensure there is sufficient fuel and the supply valve is open.Press the reset button on the burner control box once only.If the burner sounds like it is trying to start but fails, check if your oil filter is clogged or requires bleeding.
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Firebird models that show the Burner Lockout fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Firebird Burner Lockout fault code information on this page is sourced and cross-checked against the official Firebird service / installation manuals for each affected model.
- Firebird Envirogreen manual (PDF)
- Firebird Envirogreen Regular manual (PDF)
- Firebird S Range manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026