I should have shown you this too. The current timer is fed into a Honeywell branded box. I moved the black wire and it worked once but would follow command after the second try.
top left wire = programmer
Top right = wireless receiver
Bottom right = to boiler
Hi
I’ve recently moved house and after previously having hive wanted to install on my new house.
I have a combi Veissman Vitoden 100 that has a wireless thermostat and the receiver is currently wired up like the pic attached.
I followed hive and just put the faceplate on but when I asked...