Recent content by Wayne37

Robert, just watched the video and 2&5 is now clear for me. As you had the wireless thermostat, same as me, it looks like we don't need to do any changes in the existing control box with regards to 4 & 5 - is this correct? This "do nothing" seems to be true for any smart replacement Thanks

Robert, I'm looking to do the exact replacement as I have the same set up. My st9420c is in the hallway and is fed from the boiler with regards to power L, N and the heat and water via the connectors 3 & 4. Was it just try case of connecting honeywell 3 to nest 4 and honeywell 4 to nest 6 as...

Hi Robert, did you get this working as I'm leaning toward nest now

Hi, I have the same set up with honeywell and WiFi thermostat. I'm looking to swap with a hive though. Did you manage to swap them OK. I was told the hive is a straight swap with no changes. thanks