Vsmart or Vdumb VR66 wiring issues

[CBGAS]

I've got an ecotec plus 624 with an aurostor 210 and VR66 wiring Center with vsmart, for some reason, probably a wiring issue, I have no control on hot water temperature, its boiling!

Vaillant give me different answers whenever I call them and today told me to wire the ntc from the cylinder directly into the boiler wiring loom whereas before I was told to wire it into the blue ntc plug in the VR66. Doing this loses the ability to control hot water temp from the boiler display though.
Help?

 

[ShaunCorbs]

@tolly

 

[tolly]

You wire the cylinder NTC into the vr66, the cylinder stat terminals on the vr66 are 230v for conventional cylinder stats.

The benefit of using the NTC over a stat is that you can control and monitor HW temps from the controller.

Personally i use the stat though as i prefer the idea of still having an overheat stat on the cylinder

 

[tolly]

Edited.....long day.