Emergency
03 on Alpha Intec2 30SE

Your boiler has detected that the exhaust gases leaving your home are becoming dangerously hot and has shut itself down to prevent damage or safety risks.

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

High flue temperature - Flue sensor intervention (flue temperature too high)

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

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