TBH the pump isn't turning at all, so it isn't getting signal from either of the two stats, the one in the hall and the one on the tanks. Even with the boiler switched off, the pump should run when the stats call for heat. Or at least the old one would!
So I suspect the new motorised valve, or maybe the thicko didn't wire the pump properly.
But I also am concerned that the pump is a modern one which apparently "senses" stuff, it certainly doesn't have the switch the old one had which went "off, 1,2".
And you know me, anything with the word "sensing" i.e flipping electronix, it sends me down a dark hole.