So basically, if they check for 3 core at the old stat, then reverse some of the wiring changes they made to connect that 3 core back into the boiler wiring hub, then fit the wireless receiver where the old stat was = job done
So i suggest
1 - try the above first
2 - if no 3 core at the old stat and you don't want disruption of running cable - try wireless signal booster plug
3 - Have 3 core run to old stat location (or wherever is easiest and will work)
I have my receiver fitted where the old room stat was about 2" below the new programmer/room stat, logic was easier to fit, less hassle, better signal and with programmer/room stat where the old room stat was gives even heat, if you where happy with the heat before with old stat location
Yup, that's what I suggested to them before,excellent responses guys thanks, I have watched the receiver to see it flipping out so to speak, red light then green goes off and boiler stops firing, does the receiver and stat use keepalives?, as the issue is intermittent and random, I was guessing if a keepalive fails it bombs out?