Medium
208 on Worcester Bosch Greenstar 8000 Life System

Your boiler has been accidentally switched into a specific testing mode used by engineers to check emissions, which temporarily overrides normal heating and hot water operation.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Chimney sweep demand

DIY fix possible

Locate the menu button on your boiler's control panelNavigate to the service or maintenance settingsSelect the option to deactivate or exit the 'Chimney Sweep' or 'Service' mode

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