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

    Mar 2, 2008, 12:31 AM
    Colman furnace
    Have A Colman Furnace Dated 2003-model Number-dgaa070bdta-have A Lot Of Trouble With Combustion Air Switch-either Stuck Closed Or Open(have Purchased 3)had To Sucked On Hose To Combustion Air Switch To Make It Close And It Will Work For Awhile.



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    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
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    #2

    Mar 2, 2008, 06:28 AM
    Is this unit in a mobile home?
    BRUTUSTHECLOWN's Avatar
    BRUTUSTHECLOWN Posts: 3, Reputation: 1
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    #3

    Mar 2, 2008, 02:40 PM
    Yes
    BRUTUSTHECLOWN's Avatar
    BRUTUSTHECLOWN Posts: 3, Reputation: 1
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    #4

    Mar 2, 2008, 02:42 PM
    Quote Originally Posted by hvac1000
    Is this unit in a mobile home?

    Yes
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
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    #5

    Mar 2, 2008, 02:50 PM
    Mobile homes are supposed to be set level on there mounting pad. The furnaces are installed at the mobile home factory level. A out of level mobile can cause moisture/water problems with the high efficiency furnaces and there controls.

    Before you spend any more money check the level of the furnace.

    Here is a mobile home site that specialize in these units.

    Post under Coleman with model and serial number.

    mobilehomerepair.com :: Index
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #6

    Mar 2, 2008, 07:15 PM
    Its not a 90% furnace so being a little out of level will not effect it. Check to make sure the vent or fresh air intake is not restricted that is what can make or break a pressure switch.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
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    #7

    Mar 2, 2008, 08:21 PM
    Ttop I am glad you know those coleman numbers.I figured it had to be a 90% unit since it was 3 years old. I usually send them to a Mobile home site to get there questions answered. The mobile home site also has the parts and will ship them to the home owner. This is just for your future reference because parts for Mobile home units are hard to come by around here.
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