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    yoda5150's Avatar
    yoda5150 Posts: 3, Reputation: 1
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    #1

    Apr 26, 2010, 04:46 PM
    Lennox blown fuse
    I have a Lennox unit that continues to blow the fuse in the attic unit. Searching the internet I have cleaned the drip lines and replaced the contactor. The fuse continues to blow. When I push the button on the contactor the fan and compressor run. The control board was replaced last summer. What am I overlooking to stop the fuses from blowing?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Apr 26, 2010, 05:19 PM
    Find the short
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #3

    Apr 26, 2010, 06:06 PM

    It only blows when it is turned to ac?
    yoda5150's Avatar
    yoda5150 Posts: 3, Reputation: 1
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    #4

    Apr 26, 2010, 06:43 PM

    I have not tried to turn it to heat. So as of yet it has only blown when it cools. I can hear the unit upstairs begin to start and then it stops and the fuse blows.
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #5

    Apr 26, 2010, 07:27 PM

    Well first thing to do would be to put in a new fuse and ty the fan only, then the heat. This way we can elimonate some things.
    yoda5150's Avatar
    yoda5150 Posts: 3, Reputation: 1
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    #6

    Apr 26, 2010, 07:43 PM

    Thanks Joshdta. I will see if I can get the fuse in tonight. I will update as soon as possible. Thanks
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