Emergency
2910 on Worcester Bosch Greenstar 8000 F

Your boiler has detected an issue with the pipework that vents exhaust gases outside, meaning it has safely shut itself down to prevent any harmful fumes building up indoors.

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

Fault in flue system

Shared across the Greenstar 8000 F range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
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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All 99 fault codes on the Greenstar 8000 F

Seeing a different code? Every code this model can display, in one place.

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