I am trying to comission my ASHP and can't get it working, and finding the supplier so far frankly useless.   At first I thought it was a controls issue, because the web based diagnostics is not showing the water flow rate, so I thought it was refusing to run because it thought there was no water flow. But now I am coming to the conclusion that is a red herring and the on line diagnostics are not much of a reflection on what is actually happening.   So I am trying to do some