I have a vera plus which was linked up to two stella z radiator valves, I had to do a hard reset of my vera and now I can't get the stella z valves to link. Each time I press the button on the stella for 5 seconds like the manual says i get constant flashing green LED and the vera doesn't detect the valve. IS there an issue because they were previously linked maybe? I thought the hard reset would have excluded them so it should be a straight forward inclusion when I rebuilt the vera.
Any ideas?