What the manual says
Manufacturer manualIgnition 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.
Avoid the next call-out bill
A cover plan would handle faults like 4.3: no call-out fees, no surprise bills.
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