Hi All, A problem with my heating lends me to believe that I need to replace my old analogue room stat. I have had a new digital stat for some time haven't got round to installing it. The wiring for the new stat seems easy enough but I would be grateful if I could check with you guys please. My current stat has four wires, Red, Yellow, Blue and earth. they work as follows Red constant live, Yellow switched live (becomes live when I turn up the stat) Blue is I assume neutral as it doesn't show live at all at any time. The new stat requires live to COM so I assume that's the constant live red? and then neutral to NC I assume that's the blue? it doesn't indicate that a third wire is required but does have an additional wiring terminal marked up as NO is that where the yellow switched live goes please? In summary Red constant live to COM Blue neutral to NC and Yellow switched live to NO. Appreciate any help and feedback guys, many thanks
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