Emergency
2910 on Worcester Bosch Greenstar 4000

Your boiler is struggling to clear fumes properly, so it has safely shut itself down to prevent carbon monoxide or combustion issues.

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

Fault in flue system

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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