Have just seen that in the old thermostat the terminals are numbered (from top to bottom)
Terminal 2: Blue
Terminal 1: Red
Terminal 4: Empty
Terminal 3: Yellow
Earth left loose
Hope this makes sense.
New thermostat terminals lettered A, B & C (from left to right)
Thanks again in advance
Ok so the old thermostat has 4 terminals as follows:
1: Blue
2:Red
3: not connected
4:yellow
+ bare copper wire bent to the left of the terminals.
I have just bought a Honeywell DT90E requiring only two wires.........what goes where?
Thanks in advance