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-   -   Coleman Evcon D.E.S. II Heat Pump- works intermittently (https://www.askmehelpdesk.com/showthread.php?t=148173)

  • Nov 3, 2007, 03:28 PM
    nounette
    Coleman Evcon D.E.S. II Heat Pump- works intermittently
    She's an old one... I'm guessing the late 70's or 80's, but since I've lived here (4years) it seems to work for a while, but then stop... I hear a fan blowing, but it's cold air. Then I look at the t'stat and the red emergency light is on... cold air coming out of the vents. I look at the unit outside and I can see that the fan is not moving. But... sometimes if I turn the t'stat down so that the fan I hear (somewhere in the house... it's not the fan outside) stops, then wait a bit, I can get the heat to come on, I can see the fan moving on the outside unit and no more emergency light on. It's like I'm resetting it or something.

    Every year I get a hvac guy to come out... first one replaces a sequencer, the next replaces the motor on the blower outside, etc... same thing. It works for a while and then continues to act as described above... Also, note that my emergency heat NEVER gets warm... Its just cold air coming out of the vents.

    I hope someone can help me with this... it's getting cold and I'm not exactly rolling in the dough these days enough to buy another unit.

    Thanks!

    Allison
  • Nov 3, 2007, 04:16 PM
    hvac1000
    A sequencer is probably defective for your emergency heat. I would check all your thermostat wiring to make sure nothing is loose or damaged before I would go any further.

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