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  1. #1
    any thoughts on why when the thermostat on a heatpump calls for heat it blows cold and back during the summer when it was calling for cold it blew heat ? with the emergency heat indicator light lit under both scenerios ?

  2. #2
    Join Date
    Jan 2003
    Posts
    243
    Sounds like something is miss wired. Call a tech.. He will be able to find the problem.

  3. #3
    any other thoughts about what else it could be ?

  4. #4
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,415
    Well, ignoring the emergency heat indicator.. my bet is you're pusing unconditioned air out of the duct before the conditioned air comes along. Not typically a major problem if your duct is in a conditioned space (basement, between floors etc), but if it's in an attic or a crawlspace, then it can really be an issue.

    But if that indicator light is coming on, have it checked.

  5. #5
    Join Date
    Feb 2004
    Posts
    2,597
    positively a miswire, call the installing company and have them back.

    why in the hell would you not get it fixed when it was blowing heat in cool mode?


    [Edited by billva on 10-26-2005 at 10:55 PM]

  6. #6
    Join Date
    Jun 2003
    Location
    Florida
    Posts
    9,548
    Installed your own t-stat did ya?
    If everything was always done "by the book"....the book would never change.

  7. #7
    no this isnt my system this is a lady friend single mom raising 2 kids and money is tight .....I'm thinking that the wires either from the thermostat to the relay are flip flopped or the power lines to the compressor gate valve are crossed. I thought I would ask in here incase anyone has seen this situation before.

  8. #8
    Join Date
    Jan 2003
    Posts
    243
    From what you just said, you have no idea what you are talking about. You better call for some back-up.

  9. #9
    i understand the basics ....i know that the thermostat is powered by 24 volts d.c. i know that the signal to the heatpump must run thru a power relay to trip the 220volt system ...i know that the heatpump is designed to reverse depending on the season. I understand that the thermostat leads must be connected to its proper function common / fan/ heat 1/ heat2/ cool/fan etc... I think I know how to read amp draw to determine if its possibly a bad compressor. The thing runs cold when the therm. is calling for heat and it runs hot when the therm. is calling for cool ...in the mean time the emergancy heat indicator light stays on. I thought she might be able to save some money if its nothing major. My next thought is just to suggest she buy the same make and model thermostat and switch them out if that fixes the problem the work is done ...if it dosnt ...return the thermostat back to the store and assume that its crossed wires some where.

  10. #10
    Join Date
    Jan 2003
    Posts
    243
    From what you just said, you have no idea what you are talking about. You better call for some back-up.

  11. #11
    Join Date
    Oct 2005
    Location
    Quincy, Il
    Posts
    24
    I was just wondering because I have forgot how to do something. How would you do an amp test on a compressor that only list amps in LRA? How do you get the FLA?

  12. #12

    peytonc2682

    oh i c peytonc your saying if we replace the thermostat and it fixes the problem then we should go ahead and call you out to take a look anyway ? I think I understand what your really trying to say.

  13. #13
    Originally posted by trenton_guy
    i understand the basics


    Please advise the lady to contact a professional for assistance.

    This is not a DIY site, so please respect the owner’s rules. Below is a link for your convenience.

    Thanks for your understanding.

    (we can't help DIY, due to site rules )

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