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    DVman's Avatar
    DVman Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Feb 18, 2009, 05:43 PM
    Furnasman HG-90
    I Have a Furnasman HG-90 I replaced the motor on it but motor is running non stop now..


    What could it be?

    Thankx
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #2

    Feb 18, 2009, 05:47 PM
    Which motor, blower or draft inducer? If equipped, does the diagnostic LED display a fault code?
    DVman's Avatar
    DVman Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Feb 18, 2009, 06:11 PM
    It's a Blower... its an older furnace... direct motor Not the belt type..

    Its just a 4 wire motor.. 120v have the furnace hooked up to the medium speed..

    There is also 2 toggle switches in there.. one is called main... and other switch is called Summer..

    Hope that helps so u can help me...
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #4

    Feb 18, 2009, 06:18 PM

    Does flame come on. Or does the blower just run without flame.
    DVman's Avatar
    DVman Posts: 3, Reputation: 1
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    #5

    Feb 18, 2009, 06:26 PM
    Runs with and withour flame... bloewer runs always
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #6

    Feb 18, 2009, 06:33 PM

    Try flipping switches and tell us what happens.
    If you could maybe take a pic of the inside of furnace, it will give us a better idea of what we are working with. At this point, it sounds like a bad fan relay, or control. Maybe try unhooking all thermostat wires form furnace and let us know if blower shuts off then. There are only a few possible reasons this is happening. We will try to help you figure out which one it is.
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