Emergency
A23 on Ferroli Arena 30A

Your boiler has detected an issue with the ventilation system that clears away exhaust fumes, so it has shut itself down to keep you safe.

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

Flue safety device intervention

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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Related fault codes

F05View →

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