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    sebastianap's Avatar
    sebastianap Posts: 1, Reputation: 1
    New Member
     
    #1

    Nov 11, 2008, 07:11 PM
    Noma Programmable Thermostat 52-2570-6; cycling in heating
    I have installed one of the above unit for my ac and furnace. While the item works perfectly when only the AC related wires are connected, It just keeps coming on and off continuously, with the exhaust fan being the only thing that comes on and off. I got a technician to come in and look at the wiring to see if I made any error. He confirmed that every connection was right. He left with a comment saying that may be the NOMA is not compatible with my HEIL ULTIMATE furnace.
    No I have disconnected the NOMA and conncted my old mercury 2 wire thermostat for the heating only and everything is fine.
    Any advice!
    MarkwithaK's Avatar
    MarkwithaK Posts: 955, Reputation: 107
    Senior Member
     
    #2

    Nov 11, 2008, 07:14 PM

    Yeah, if you had a technician in to look at the wiring then you should have had him fix the problem.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
     
    #3

    Nov 11, 2008, 07:24 PM

    Mark said it. They should have fixed the problem, whether it be a non compatible thermostat or any other issue. If your old thermostat works, and the new one doesnt(and it is wired correctly), then you need to geta compatible thermostat.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #4

    Nov 11, 2008, 08:38 PM
    From your owners manual. Call them


    Compatibility
    Generally, equipment with low voltage control is compatible with the Heating/Cooling Programmable
    Thermostat (52-2570-6). For details on compatibility of your particular equipment, please call our
    Technical assistance line at 1-888-468-6876.

    This should be your model number of thermostat. If not the phone number above is still good for Noma. UPM is the same as Noma. Info and model number found on page 23

    http://www.upm-marketing.com/images/..._Downloads.pdf

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