High
Red reset button illuminated on Alpha 500e

Your boiler has stopped working because it failed to ignite, which could be due to a simple issue like a lost gas supply or a more complex internal fault.

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 has failed to light

From this model's manual
Verified against the Alpha Boiler 500e 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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