E5 High

Firebird E5 Fault Code

The Firebird E5 fault code means: your boiler's burner has stopped working and locked itself out, meaning the system has shut down to prevent damage or safety issues.. It appears on 5 Firebird models 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 fault (possibly burner lockout)
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 valve is fully open.Press the illuminated reset button on the front of the burner once to attempt a restart.

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Firebird models that show the E5 fault code

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

Source

Firebird E5 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 7 July 2026