Recent content by Milenkoste

One more thing that is bugging me is that only when I've connected the ground wire into 3 COM the thermostat turned on.

No, there isn't a connection unit. On the picture above the 6 wires that are connected to the boiler are pulled through to the thermostat but only L, N and ground where connected to the old unit. 3,4 and 5 are just left behind tied.

I have all these 6 wires pulled to the thermostat, can I do something? The old one was battery powered.

Hello, I've bought the thermostat in the picture and have connected the 3 wires from my old thermostat. The thermostat turned on but it won't turn on the boiler. I have boiler board photo attached. Please help.