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    taft's Avatar
    taft Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 25, 2012, 02:23 PM
    Where is my centrigugal switch on my coleman furnace
    Where ia my centrigugal switch on my coleman furnace?
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Sep 25, 2012, 04:23 PM
    Depends on how old the furnace is. It is either built into the draft inducer motor assembly, or will be located near the draft inducer with a rubber hose between the draft inducer and the switch. If you can post a pic or two of the inside of your furnace, I should be able to tell you what's what.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #3

    Sep 25, 2012, 07:30 PM
    If it is truly a centrifical switch, it is built into the combustion motor.

    If this is the furnace I think it is, there are 4 wires (instead of the normal 2) attached to the motor. The switch wires would be those toward the back of the motor & If I remember correctly, they are blue.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #4

    Sep 26, 2012, 04:19 PM
    You got it Grady. The ones Ive seen were always blue. And correct that it will be built in if truly a centrifical, vs a pressure switch wich would have course have the rubber tube to it. I liked when they finally wised up and switched over to the pressure switches personally.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #5

    Sep 26, 2012, 06:41 PM
    I agree. Pressure switches are far preferable, in my opinion, to centrificals. Some Coleman mobile home furnaces have a combustion air damper which must open before the burner will attempt to fire. There is an end switch on those as well.
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