How much does it cost to fix Firebird error code BURNER LOCKOUT?

Typical repair cost for the Firebird BURNER LOCKOUT fault is £120-300 including labour.

BURNER LOCKOUT High

Firebird BURNER LOCKOUT Fault Code

Q: What does the Firebird BURNER LOCKOUT fault code mean?

Your boiler has shut down because it cannot safely ignite or maintain its flame, often due to a fuel supply issue or a dirty component.

Also written as BURNERLOCKOUT — same fault.

The Firebird BURNER LOCKOUT fault code means: your boiler has shut down because it cannot safely ignite or maintain its flame, often due to a fuel supply issue or a dirty component.. It appears on 3 Firebird models in our database.

Technical description: The burner control box lockout safety feature operates automatically if a fault occurs in the burner operation. The light on the front of the burner will illuminate. Potential causes: An interruption in the fuel supply, an electrical supply fault, a fault with the burner or its safety control system, the failure of a burner component, worn or dirty oil nozzle, or incorrect flue installation.

Typical repair cost £120-300 (including labour)

DIY fix possible

Check that your external oil tank has plenty of fuel.Ensure all oil supply valves between the tank and the boiler are fully open.Press the illuminated reset button on the burner once (if it fails again, do not continue trying and call a technician).

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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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026