BoilerFaultCodesTechnical description
Flame detected even though the appliance is switched off.
What causes this fault?
This fault occurs when the boiler's internal sensor mistakenly reports that a flame is present in the burner after the heating cycle has finished. The most common cause is a dirty or damaged sensing probe that is sending a false signal, or a fault within the main control board that is misinterpreting the data. For safety reasons, the boiler identifies this as a conflict and will refuse to ignite to prevent any potential over-heating.
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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