Emergency
2918 on Worcester Bosch Greenstar 2000

Your boiler has detected an issue with the way it is burning gas and has shut itself down to ensure your safety.

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

Fault in combustion control

From this model's manual
Verified against the Worcester Bosch Greenstar 27cdi installation & service manual, page 85.
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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