BoilerFaultCodesYour boiler has detected an issue with the internal burner assembly components, likely related to the incorrect gas injection setup for your fuel type.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Burner Injector – Propane Stereomatic, Type 7, 2.78mm dia.
What causes this fault?
This fault happens when the boiler identifies that the internal components used to burn gas do not match the specific type of fuel being supplied to your home. It typically occurs if the wrong parts were installed during a repair or if the settings were incorrectly adjusted, preventing the unit from creating a safe and efficient flame. The boiler shuts down as a safety precaution because using the wrong injectors can cause the burner to overheat or flicker dangerously.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like E00-741 — no call-out fees, no surprises.
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