How to use NCB700 ON Parameters & Test Mode

[@sjbmw1]

How do you actually get to this menu??? Can't see it on my boiler..

[@DilDilpakistan1947]

Can you please tel me how to install smart kit thanx
I just installed Navien NCB 42kw 700 but on display central heating off I try to on but I can't do it please help me just install yesterday I can't change on display off to on