BoilerFaultCodesTechnical description
Ignition Lockout
What causes this fault?
This fault occurs when the boiler's control system attempts to start the burner multiple times but fail to detect a stable flame. The most common reasons are a lack of gas supply reaching the unit, a blocked burner, or a faulty component that is unable to generate the spark required to ignite the gas.
This fault is more common in winter, as sub-zero temperatures can cause the external condensate pipe to freeze, creating a blockage that prevents 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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