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    xbennett's Avatar
    xbennett Posts: 4, Reputation: 1
    New Member
    		  
    #1

    Jun 4, 2008, 07:03 AM
    Heil Blower fan won't turn off
    Ihave a Heil heat/air gas pack(forced air) unit. It's about 20 years old, but it's been a great one.Everything works fine I tested both the heat and the ac. The unit is in the attice and only came on when the temperature got really hot up there. Understand it could be fan limit control.. but don't know wher it is in the unit... model NUGG075df01
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Jun 4, 2008, 08:05 AM
    There should be a part identifacion legacy, on the inside of the door,at 20 years old I would start to be concerned,, get someone to check it out ,the heat exchanger for a safety check,they burn out and get full of holes after a while
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Jun 4, 2008, 10:43 AM
    wmproop is dead on. Get that heat exchanger checked. The life you save may be your own.
    xbennett's Avatar
    xbennett Posts: 4, Reputation: 1
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    #4

    Jun 4, 2008, 12:47 PM
    Quote Originally Posted by hvac1000
    wmproop is dead on. Get that heat exchanger checked. The life you save may be your own.
    Whaat about adjusting the fan limit switch (currently set to 70)
    xbennett's Avatar
    xbennett Posts: 4, Reputation: 1
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    #5

    Jun 4, 2008, 12:48 PM
    Quote Originally Posted by hvac1000
    wmproop is dead on. Get that heat exchanger checked. The life you save may be your own.
    What about adjusting the fan limit (currently 70)
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #6

    Jun 4, 2008, 01:21 PM
    Give it a whirl.
    blkyzfr1's Avatar
    blkyzfr1 Posts: 4, Reputation: 1
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    #7

    Dec 20, 2008, 11:09 PM

    xbennett, I am having same issues on same model, how did you fixed your problem? Please advise, did fan limit adjustment fixed problem?
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