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.

Technical description

Burner has failed to light

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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