jeffik18 Posted August 7, 2012 Share Posted August 7, 2012 I Have Carrier Hvac system 2 stages and gas Radiator heating. I checked the wire the hvac wired and its 24hz voltage. But for some reason the thermo does not power on unless its from the battery. Any suggestions? Link to comment Share on other sites More sharing options...
turls Posted August 7, 2012 Share Posted August 7, 2012 Just something obvious, is your switch set to not power steal? Link to comment Share on other sites More sharing options...
jeffik18 Posted August 8, 2012 Author Share Posted August 8, 2012 I believe so. Link to comment Share on other sites More sharing options...
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