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    mikekrull10's Avatar
    mikekrull10 Posts: 4, Reputation: 1
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    #1

    Jun 10, 2009, 05:41 PM
    Heat and AC run simultaniously
    Had a new T-stat installed while having system inspected. Now when I switch to cooling from heating both run at the same time. What the.. Is the new T-stat wired wrong? Very frustrating! Please help.
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #2

    Jun 10, 2009, 05:44 PM

    Do you have gas heat or electric?
    mikekrull10's Avatar
    mikekrull10 Posts: 4, Reputation: 1
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    #3

    Jun 10, 2009, 05:45 PM
    Quote Originally Posted by Joshdta View Post
    do you have gas heat or electric??
    Gas
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #4

    Jun 10, 2009, 05:48 PM

    OK, well can you take the new stat off and tell me what wires you have hooked to what terminals? Also look to make sure nothing is touching but the rh and rc termanal
    mikekrull10's Avatar
    mikekrull10 Posts: 4, Reputation: 1
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    #5

    Jun 10, 2009, 05:51 PM
    Quote Originally Posted by Joshdta View Post
    ok, well can you take the new stat off and tell me what wires you have hooked to what terminals? also look to make sure nothing is touching but the rh and rc termanal
    One minute
    mikekrull10's Avatar
    mikekrull10 Posts: 4, Reputation: 1
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    #6

    Jun 10, 2009, 06:08 PM
    Quote Originally Posted by Joshdta View Post
    ok, well can you take the new stat off and tell me what wires you have hooked to what terminals? also look to make sure nothing is touching but the rh and rc termanal

    The wire old with cotton insulation and there don seem to be any markings on the terminals. This was professionally installed while I was there but the wiring is hard to make out because of the excess insulation there.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #7

    Jun 10, 2009, 08:00 PM
    Sounds like the new thermostat is either intended or configured for a heat pump system.
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