High
24 on Ideal Mexico Super 100FF / 125FF

Your boiler is failing to start because it cannot successfully turn on the small initial flame required to ignite the main burner.

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

PILOT WILL NOT LIGHT

From this model's manual
Verified against the Ideal Mexico Super 100ff 125ff System 3 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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

A cover plan would handle faults like 24: no call-out fees, no surprise bills.

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