Emergency
03 on Alpha E-Tec Plus

Your boiler has automatically shut down because the exhaust gases escaping through your flue pipe have become dangerously hot, suggesting a potential internal blockage or a cooling issue.

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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