High Lockout
4.3 on Ideal Logic Max System

Your boiler has failed to light after several attempts, meaning it has shut down as a safety precaution and will not provide heating or hot water.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Ignition Lockout

What causes this fault?

This fault occurs when the boiler tries to light itself several times but fails to detect a stable flame. The most common reasons are a lack of gas supply to the unit, a dirty ignition component that can no longer create a spark, or a debris-clogged burner.

This issue often surfaces during the first cold snap of winter when components that have been idle over summer are suddenly put under increased strain.

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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