Medium
2980 on Worcester Bosch Greenstar 8000 F

Your boiler has automatically locked itself for safety reasons and needs to be manually reset.

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

Locking fault: To unlock Hold up and down arrow keys pressed simultaneously for 3 s. (Boiler locked. Contact a qualified heating engineer)

Shared across the Greenstar 8000 F range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
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 up and down arrow keys on the boiler's control panel.Press and hold both the up and down arrow keys simultaneously for 3 seconds.Wait to see if the boiler unlocks and resumes normal operation.

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All 99 fault codes on the Greenstar 8000 F

Seeing a different code? Every code this model can display, in one place.

200201202203204208214224227228229232233234235237238242244245249250251252253254257258259262263265268269273281283284305306357358360362363604815101010131017101810191021102310251037106510681070107110721075107620852908291029142915291629202923292429252926292729282931294029462948294929502951295229552956295729612962296329652966296829692970297129722981

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