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View Full Version : Where does a blue A2 wire goes in a home termostate?


sidceb
Apr 17, 2011, 02:23 PM
I'm replacing mu old thermsotate with a new honeywell digital, but connected to my old unit there is a blue wire connected to screw A2, on the new honeywell unit there is no A2 port. Where does this blue A2 wire goes on the new thermostate? Thank you for your help

wmproop
Apr 19, 2011, 02:37 PM
Probably c---common