Emergency
E5 332 on Worcester Bosch Greenstar 12i System

Your boiler has detected that the water inside the unit has become dangerously hot and has shut itself down to prevent damage or safety risks.

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

Primary flow sensor has exceeded 110°C - Primary flow sensor overheated

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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