BoilerFaultCodesTechnical description
Flame error
What causes this fault?
This fault occurs when the boiler's control system loses the signal that a flame is present while it should be firing. It is often caused by a buildup of carbon on the electrodes or a blockage in the condensate trap that backs up and 'drowns' the flame. In some cases, it can also be triggered by an inconsistent gas supply or a failing gas valve that cannot maintain a steady flow.
This fault is more common during extreme cold spells, as a frozen external condensate pipe can cause water to back up into the boiler and extinguish the flame.
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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