cuts and silicone hose and inlet screen are installed on them

Please excuse the stupidity of this reply but I thought I would ask: Is it possible that the microswitch for the low water safety mechanism is partially engaging/disengaging - if I remember, this happens when the water level gets low...

Hello Mark,
it is not a stupid thing to say at all,
but
that will make ALL power go off to the main the microswitch works on one of the main entry power wire

Thanks to the great support from Stefano at Espressocare and to the distributor 1st line for getting things straight for us.

So what was it in the end, and is everything working well now?

All we found so far was air entering the line ( possibly the silicone hose curled up in the reservoir)and machine that needed to be primed after

I have a Vibiemme DD Super 'automatic' v2 and was experiencing pressure problems using the reservoir (mostly a long delay in getting up to pressure). Discovered that one of the clear plastic tubes was loose and letting in small amounts of air. Replaced all of the zip-ties and it worked like new. I also had a break in one of the tubes when I first received the unit. But that was mentioned as a possible problem in the Quick Start pages that came in the box, so I was able to spot and repair the tube by cutting off the damaged end.

There are so many of these zip-ties inside the unit, and replacing them was time consuming, but in-the-end it was well worth the piece-of-mind knowing that all the zips were secure. Also, I recommend removing/replacing only one zip at-a-time as the best way to avoid losing track of where each tube was supposed to go. If I had removed them all at once I'd never have hooked things back up right