BoilerFaultCodesTechnical description
Flame circuit fault
What causes this fault?
This fault happens when the boiler's internal computer is unable to confirm that a flame has successfully lit inside the burner. The most common reasons are a worn-out sensor that can no longer 'see' the flame or a failure in the electrical circuit that sends this signal to the main control board.
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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