RED light High

Firebird RED light Fault Code

Also written as REDLIGHT — same fault.

The Firebird RED light fault code means: your boiler's burner has shut down for safety because it couldn't light properly or lost its flame during operation.. It appears on 1 Firebird model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Burner control box lockout safety feature. Could be caused by: An interruption in the fuel supply; An electrical supply fault; A fault with the burner or its safety control system; The failure of a component (e.g. photo cell); Worn or dirty oil nozzle.
Typical repair cost £100-250 (including labour)

DIY fix possible

Check that you have enough heating oil in your storage tank.Ensure the oil supply valves are fully open.Press the illuminated red reset button on the burner control box once.

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Firebird models that show the RED light fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Firebird RED light 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