Low
268 on Worcester Bosch Greenstar 8000 Life Regular

Your boiler is currently in a manual testing mode, usually activated by an engineer or someone navigating the settings menu to check the internal parts.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Component test mode. Appliance is running the manual component test as activated in the menus.

From this model's manual
Verified against the Worcester Bosch Greenstar 8000 Life Regular installation & service manual, page 71.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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