They recommend you have a service guy do it but if you use care
manuals are here
Discontinued product literature or here
https://www.worcester-bosch.co.uk/installer/literature/oil-fired-boiler-literature
SOURCE: Bosch boiler System
it means that the boiler wants to be serviced, the boiler will still work fine. Once the boiler has been servcied, there are a succession of buttons, that need to be pressed, to tell the boiler that it nhas been serviced. then 365days after it will do it again. Its there to prompt you, to get the boiler serviced
SOURCE: Worcester combi boiler losing pressure & water through o/flow
having the same problem and its a new bolier. thanks , adriano.
SOURCE: worcester oil heatslave boiler pressure rises to over 3 bar when
iif you,ve tried everythng change gauge
SOURCE: Worcester Bosch Highflow 400 Boiler - no hot water or heating
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Hi, this is Worcester, Bosch Group
Although we don't currently offer live technical support online, our Technical
Support department will be able to help. Their number is 0844 892 3366 -
they're open 6 days a week and on average answer calls within 20 second. If you
want to know more about our Technical Support department visit our website
http://www.worcester-bosch.co.uk/homeowner/customer-service/customer-technical-support
We look forward to helping you
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