I just checked,.. its actually an old pure freedom "Flowmaster", defo no dead end detection.
I'm upgrading,.. remote control & frost protection on my new one.

Hi Nat,
If its a Varistream, I thought they all had dead end sensors. The first Varistream we go was the second edition analogue and that had dead end detection.
Anyway James, looks like you are going to have to sort the pressure switch side of the pump out. I would check if the Flojet has a working pressure switch.
Spruce.