Emergency
E96 on Alpha E-Tec R

Your boiler has detected that fumes are not escaping properly through the exhaust pipe, meaning it has shut down to prevent the buildup of dangerous gases inside your home.

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

Clogged flue blockage

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

E97View →

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