High
Red reset button illuminated on Alpha 240XE

Your boiler has detected an issue preventing it from keeping the flame lit, so it has safely shut itself down.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Burner does not stay alight after 10 seconds or fails to light (240XE only)

From this model's manual
Verified against the Alpha Boiler 240xp 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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