Medium
249 on Worcester Bosch Greenstar 2000

Your boiler's computer is experiencing a temporary processing error and needs to be reset to clear the glitch.

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

Internal software error

From this model's manual
Verified against the Worcester Bosch Greenstar 27cdi installation & service manual, page 81.
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 button for 3 to 5 seconds.Wait for the boiler to restart and check if the error code disappears.

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