High
L.E.D. I on Ariston E-Combi One

Your boiler has failed to light the gas burner for heating or hot water, usually because the fuel supply is interrupted or the ignition system isn't sparking correctly.

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

IGNITION FAILURE: This indicates ignition failure when a flame is not detected within 7 seconds of starting an ignition sequence.

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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Related fault codes

501View →504View →

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