High
3. PILOT LIT, BUT NO MAINS GAS on Ideal WLX RS50 / RS60

Your boiler's small pilot light is on, but the main burner is failing to ignite to 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.

What the manual says

Manufacturer manual

Check supply voltage at control box, fuse, CH and HW controls, system controls (room/cylinder thermostats), boiler thermostat, and gas control valve.

Shared across the Ideal WLx range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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 3. PILOT LIT, BUT NO MAINS GAS: no call-out fees, no surprise bills.

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All 2 fault codes on the WLX RS50 / RS60

Seeing a different code? Every code this model can display, in one place.

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