BoilerFaultCodesTechnical description
Ignition Lockout
What causes this fault?
This fault occurs when the boiler attempts to ignite the gas several times but fails to detect a sustained flame. The most common reasons include a lack of gas reaching the burner, a worn-out ignition electrode that can no longer create a spark, or a faulty gas valve preventing the fuel from flowing.
This fault is more frequent during extreme cold spells, as external gas meters or regulators can freeze, or the condensate discharge pipe can become blocked with ice, preventing the boiler from lighting.
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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