I have an old Trane and have rd,white,blue,and green wiring. Every time I switch the heat comes on and no ac.
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I have an old Trane and have rd,white,blue,and green wiring. Every time I switch the heat comes on and no ac.
Then heat comes on when you switch the thermostat to cool?
Yes, I have the wires in the correct setting and now I have nothing
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