BoilerFaultCodesYour boiler has detected a fault with the burner unit, meaning it cannot safely ignite or maintain a flame to provide heat or hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Burner – Natural Gas Aeromatic, Ref. AACC 2233//0055 33558842
What causes this fault?
This fault occurs when the boiler's internal computer detects that the burner is not firing correctly or the flame signal is too weak to operate safely. It is usually caused by a failure in the gas delivery system or worn-out ignition components that can no longer create a spark. Over time, carbon buildup on the burner or a faulty gas valve prevents the steady flow of fuel needed to maintain heat.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like E00-720 — no call-out fees, no surprises.
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