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    KC23's Avatar
    KC23 Posts: 4, Reputation: 1
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    #1

    Jun 9, 2009, 04:44 PM
    Air and heat come on at same time
    I could use any help that I can get. The only way that my air will come on is if I cut on the heating on the fusebox panel, and then the heat and the air will come on. I put in a new thermostat but the only way that anything will work is if I cut on the heat. With the air fuse on it does not work. I would appreciate any help.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Jun 9, 2009, 05:51 PM

    The thermostat controls heat, cool and fan(s), misswiring can cause it to try and heat and cool at the same time.
    Would check thermostat wiring?
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #3

    Jun 9, 2009, 06:31 PM

    Did you put a jumper from rh top rc when wiring the new stat??
    KC23's Avatar
    KC23 Posts: 4, Reputation: 1
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    #4

    Jun 16, 2009, 12:17 PM
    No, I didn't put a jumper, I just reconnected it the same way it was-should I do something different?
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #5

    Jun 16, 2009, 08:59 PM
    Were you having this problem before you replaced the thermostat? If not, perhaps the new thermostat is configured or intended for a heat pump system.
    KC23's Avatar
    KC23 Posts: 4, Reputation: 1
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    #6

    Jun 17, 2009, 02:53 PM
    Yes, I was having this problem before I changed thermostats- I just checked the wires(4) and they are all in the right place. The new thermostat works perfectly now, it's just when I cut the air off on it the heat still stays on. And the only way all of it stays on is if I flip the heat fuse on the fusebox.

    I looked at the wires to see if I could disconnect the one that controls the heat, but that didn't work either. It seems no matter what I do, the heat just won't go off unless I cut it all off at the fusebox. It's supposed to reach 100 degrees tomorrow so I sure could use some input! Thanks!:)
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #7

    Jun 17, 2009, 03:03 PM

    Is this a electric furnace? Probably need a new heat sequencer.
    KC23's Avatar
    KC23 Posts: 4, Reputation: 1
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    #8

    Jun 17, 2009, 03:33 PM
    Yes sir, it's an electric furnace. What's a heat sequencer?
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #9

    Jun 17, 2009, 06:52 PM

    http://www.drillspot.com/pimages/63/6339_300.jpg

    Controls the fan and the heat on your furnace, probably stuck causing the heat and the fan to stay on.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #10

    Jun 17, 2009, 08:57 PM
    Good call. Definitely fits the profile.
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