High
L2 on Ideal Logic Combi ESP1

Your boiler has tried to light several times but cannot establish a flame, meaning it has shut down for safety.

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.

What the manual says

Manufacturer manual

Ignition Lockout

From this model's manual
Verified against the Ideal Logic Combi Esp1 installation & service manual, page 55.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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Avoid the next call-out bill

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