BoilerFaultCodesYour boiler has detected a flame when there shouldn't be one, or the sensor incorrectly thinks a fire is lit, causing it to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Extraneous flame
What causes this fault?
This fault occurs when the boiler's control system detects a flame signal at a time when the gas should be turned off. This is often caused by a faulty sensor sending a false signal, a gas valve that is leaking slightly, or a glitch in the main circuit board that misinterprets electrical background noise as a fire.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like E011 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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