My central unit works fine... well it did until I touched it! lol.
I was upgrading to a digital tstat and noticed that the heat-off-cool selector switch was broken.
I opted to put my old one back on for the time being. Now I can't get the unit to come back on.
Would you please let me know the correct way to wire the thermostat??
Here's the current wiring:
It's a Trane with aux heat.
x2 = black
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