BoilerFaultCodesTechnical description
Flame loss
What causes this fault?
This fault occurs when the boiler successfully ignites but cannot maintain the flame, leading the system to shut down for safety. The most common reasons include an inadequate gas supply, debris on the burner, or a faulty sensor that can no longer detect that the flame is actually lit.
This fault is more common during extreme cold snaps, as freezing temperatures can cause the external gas regulator to stick or the condensate pipe to freeze and back up.
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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