Thanks Nozzle, this is supposed to do both room and under floor :/
I figured the L and N on the right are for the central heating, and the Load L1 and N1 on the left are for the floor heating, which I left alone.
Hi
I'm getting a little stuck with what should be a pretty simple heating thermostat swap and wonder if anyone can help?
My very old thermostat had three wires attached: Earth, L (brown) and SL (blue).
We have no underfloor heating.
The thermostat I am installing is pretty simple, as...