Im changing out thermostats and there are more wires for only four wires connected to the old one. There are7 wires in the wall. Witch ones do I conect. Just the 4 original or all 7?
Im changing out thermostats and there are more wires for only four wires connected to the old one. There are7 wires in the wall. Witch ones do I conect. Just the 4 original or all 7?
The same 4 wires you removed from old tstat only
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