Emergency
2910 on Worcester Bosch Greenstar 8000 Style Combi

Your boiler is struggling to breathe properly because its flue pipe, which vents gases outside, may be blocked or disconnected.

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.

What the manual says

Manufacturer manual

Error in the flue gas system. (Too much or too little resistance in air flow) • the fan speed is higher than expected due too missing exhaust. • the fan speed is to low due to an obstruction in the exhaust.

From this model's manual
Verified against the Worcester Bosch Greenstar 8000 Life Style installation & service manual, page 78.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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