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    ttocs76's Avatar
    ttocs76 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Nov 8, 2008, 10:08 AM
    Goodman GMS91155DXA LED blinks 3 times
    First a bit of history:
    The furnace is almost 2 years old and worked all of last winter without any problems.
    Based on the information in the manual and some things I gleaned online, I replaced the pressure switch. Worked great ran all of last night and then starting this morning I get the same error code and the furnace has again stopped working.
    I have double checked the flue and the air intake and they are clear.
    I have also made sure that the hoses are clear.

    My experience with furnaces is close to non-existent (Floridian now living in a cold climate)
    Which is why I have included a link to a picture of the inside of my furnace.
    Picasa Web Albums - Scott - !!Picture of my Furnace!!
    Its also in important to note that I am not familiar with the technical names of the furnace components.

    Any suggestions will be much appreciated
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 8, 2008, 03:03 PM
    Try to clean the flame sensor with sand paper.
    ttocs76's Avatar
    ttocs76 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Nov 8, 2008, 06:25 PM

    Sanding the flame sensor did not work. :(
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Nov 8, 2008, 08:35 PM
    Check to be sure both rubber pressure switch hoses are good with no holed or cuts etc. Also make sure there are no obstructions in the hoses.
    dcoggs3's Avatar
    dcoggs3 Posts: 7, Reputation: 1
    New Member
    		  
    #5

    Nov 3, 2010, 06:14 PM
    What are the goodman furnace fault codes
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
    Ultra Member
    		  
    #6

    Nov 3, 2010, 06:48 PM

    Look on back of the door, or on the control.
    dcoggs3's Avatar
    dcoggs3 Posts: 7, Reputation: 1
    New Member
    		  
    #7

    Nov 8, 2010, 05:21 PM
    Make sure you are receiving negative pressure from vac line or that tube is not plug
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