High
5 P1 on Ariston Clas Net One

Your boiler has failed its first attempt to light the flame, which means it cannot produce heating or hot water at this moment.

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

1st Ignition Failed / FIRST IGNITION ATTEMPT UNSUCCESSFUL

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

5 P2View →5 P3View →501View →

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