Baxi eco blue advance heat 30?

How do I replace 3 way mid position diverter valve which is leaking water it is in the airing cupboard next to hot water cistern.
Philip, September 2022


done
https://m.youtube.com/watch?v=NzdSWUoTQhg

https://m.youtube.com/watch?v=Dz2p0Av4EE4

https://m.youtube.com/watch?v=yrobLE86Hfk

https://m.youtube.com/watch?v=T7UTDtrmcvM

Edjj, September 2022
link Click here to see other fixes for Baxi.