BoilerFaultCodesYour boiler thinks it sees a flame when there shouldn't be one, causing it to shut down for safety purposes.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flame error – false flame or flame detected before burner started
What causes this fault?
This fault occurs when the boiler's internal sensor detects heat or electricity that looks like a flame before the gas has even been turned on. This is usually caused by a contaminated flame sensor sending a false signal or a moisture-damaged control board misinterpreting electrical interference as a burning flame.
This fault can be more frequent during periods of heavy rain or high humidity, as moisture ingress into the casing can cause the electrical short-circuits that trigger a false flame signal.
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 F7228 — no call-out fees, no surprises.
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