BoilerFaultCodesFirebird e5 Fault Code
Also written as E5 — same fault.
The Firebird e5 fault code means: your boiler has stopped working because the burner failed to ignite or stay lit, meaning you currently have no heating or hot water.. It appears on 4 Firebird models in our database.
Technical description: Burner lockout. Burner fault.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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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.
- Firebird Envirogreen manual (PDF)
- Firebird Envirogreen Regular manual (PDF)
- Firebird Silver Slimline Systempac 2020 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026