Jwarenzek

Jwarenzek t1_jc20qdt wrote

Reply to comment by anon5005 in Thermostat wiring? by ZzIceDzZ

That’s an oversimplification. The wires OP has can power the thermostat, provide fan only control, call for heat, and call for cool. It may even be two stage. You are correct in that each of those signal wires needs only to be shorted to the power to close the circuit and activate a particular function.

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