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    DONNA MARIE W L P G's Avatar
    DONNA MARIE W L P G Posts: 2, Reputation: 1
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    #1

    Aug 4, 2007, 07:36 AM
    Air conditioner keeps blowing fuse in circuit board
    Hello,
    I Am Having A Problem With My Carrier Weathermaker 8000 Air Conditioning. It Keeps Blowing The Fuse In The Circuit Board Inside The Furnace Unit. Yesterday I Checked The Wiring Inside The Thermostat Tightened A Couple Of Wires And The Unit Started ( Yea) But It Ran Continuously For Almost 7 Hrs Then Shut Off... Tried To Get It To Start Again But Again The Fuse Just Blows As Soon As You Hit The On Switch
    Getting Frazzled As Well As Cooked... it Is Very Hot Here Right Now
    Anybody Got Any Idea As To What The Problem Might Be?
    Thanks,
    Donna
    acetc's Avatar
    acetc Posts: 1,004, Reputation: 79
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    #2

    Aug 4, 2007, 10:49 AM
    The probable causes are a short in the thermostat wiring , many times dogs will chew on it and short it out, or the coil on the contactor may burn out and pop the fuse ,To determine this you can disconnect the thermostat wires to the out side unit and turn the thermostat on if it does not blow the fuse then look in that direction, disconnect the stat wires from the contactor and try it . If it is an intermittent problem then most likely it is a short in the control wiring.
    DONNA MARIE W L P G's Avatar
    DONNA MARIE W L P G Posts: 2, Reputation: 1
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    #3

    Aug 5, 2007, 03:16 AM
    Quote Originally Posted by acetc
    The probable causes are a short in the thermostat wiring , many times dogs will chew on it and short it out, or the coil on the contactor may burn out and pop the fuse ,To determine this you can disconnect the thermostat wires to the out side unit and turn the thermostat on if it does not blow the fuse then look in that direction, disconnect the stat wires from the contactor and try it . If it is an intermittent problem then most likely it is a short in the control wiring.




    Thanks, so much for your quick reply. Sure enough the wire to the outside unit had a slight break in it (probably the action of my sweet little i will chew anything beagle) i am no longer cooking, but feeling the cool breeze of my ac once again. Again, "THANK YOU" for your expertise it is much appreciated donna marie w l p g
    blessed815's Avatar
    blessed815 Posts: 1, Reputation: 1
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    #4

    May 31, 2010, 06:27 PM

    My american standard unit keep blowing the fuse every time I cut the air on last year I replace the board the tstat and the trans former today I open the condenser and found a nest of field mice right on the contacter what should I do.
    Angrycustomer's Avatar
    Angrycustomer Posts: 79, Reputation: -1
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    #5

    Jun 12, 2010, 06:41 PM
    Quote Originally Posted by DONNA MARIE W L P G View Post
    THANKS, SO MUCH FOR YOUR QUICK REPLY. SURE ENOUGH THE WIRE TO THE OUTSIDE UNIT HAD A SLIGHT BREAK IN IT (PROBABLY THE ACTION OF MY SWEET LITTLE I WILL CHEW ANYTHING BEAGLE) I AM NO LONGER COOKING, BUT FEELING THE COOL BREEZE OF MY AC ONCE AGAIN. AGAIN, "THANK YOU" FOR YOUR EXPERTISE IT IS MUCH APPRECIATED DONNA MARIE W L P G
    =
    roof roof.. LOL/ honestly, I would check the fan relay if its what I think its possible your short could be confirmed as not being the wire, then jumped out and run off your emergency switch until a new low voltage board came in. sometimes you have to be there!
    Angrycustomer's Avatar
    Angrycustomer Posts: 79, Reputation: -1
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    #6

    Jun 12, 2010, 06:45 PM
    Quote Originally Posted by blessed815 View Post
    my american standard unit keep blowing the fuse everytime i cut the air on last year i replace the board the tstat and the trans former today i open the condenser and found a nest of feild mice right on the contacter what should i do.
    =
    have a bud-light first then call sears. And ask for tech 903278.
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