Medium
268 on Worcester Bosch 24/28/35 CDi MkII

Your boiler has been accidentally switched into a special testing mode used by engineers, which is why it is currently preventing your heating and hot water from working.

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.

What the manual says

Manufacturer manual

Component test mode.

From this model's manual
Verified against the Worcester Bosch Greenstar Cdi Compact installation & service manual, page 65.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate the reset button on the front control panel.Press and hold the reset button for 3 to 5 seconds to exit the service/test mode.Wait for the boiler to cycle through its startup process and return to normal operation.

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