Emergency
AA0033 on Ariston Genus 24 MFFI

Your boiler has switched itself off because the water inside it has become dangerously hot and is overheating.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description

The heating flow temperature exceeds 100°C during operation

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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