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None of the wires are touching. They haven't touched. It used to work
fine for at least a year. I'm not sure how to fix the Y1 problem. The AC
fan works. The heat activation works. Just a Y1 that goes somewhere and
I have no idea where it goes.
What does blue C wire do? and what is *0B?Those shown are the only wires
that go up to the thermostat. It was working fine with the Nest for at
least 1 year. I've replaced the one that was already with the house.What
do you do when it says no power t...
