Emergency
E96 on Alpha C25 Xtraflame

Your boiler has detected an obstruction in the pipe that expels waste gases, causing it to shut down to prevent the buildup of dangerous fumes indoors.

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

Blocked flue

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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