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Thread: Heater and A/C not working

  1. #16
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by tjk34 View Post
    Yes, we changed the batteries in the thermostat and we had the voltmeter on AC reading. What setting should it be on please?

    You should check your 24V transformer for power, Using the AC Range on your meter.

    Sounds like the transformer is not getting power or is bad, or you have a broken low voltage wire conductor.


    Do you understand Jim's wiring diagram ?


    P.S. Ground has nothing to do with it, It is AC not DC like you may be thinking.
    Last edited by DonL; 10-30-2013 at 04:48 AM.
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