BoilerFaultCodesTechnical 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 is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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