BoilerFaultCodesTechnical description
Flame is not detected. The spark stops, the gas valve closes, and the fan continues to run.
What causes this fault?
This fault occurs when the boiler attempts to start up but cannot confirm that a flame has successfully lit. The most common reasons are a worn-out ignition spark that fails to catch the gas, or a dirty sensor that cannot 'see' the flame even after it has started. It can also be caused by a lack of gas reaching the unit due to a faulty internal valve.
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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