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

    Jan 17, 2008, 12:30 PM
    Trane XE 80-blowing out cool air
    I have a Trane XE 80 gas furnace -it is blowing out cool air. I have it set on 72 it shows it is only 65 in the house. Is there a way to trouble shoot this before calling a repairman?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 17, 2008, 12:38 PM
    Air filter dirty?
    therinnaiguy's Avatar
    therinnaiguy Posts: 153, Reputation: 5
    Junior Member
    		  
    #3

    Jan 17, 2008, 01:50 PM
    Yes, look for a small viewing port in the lower section of the furnace. You will see a light blinking. Count the blinks and then remove the front panel. On the reverse side is a diagnostic chart that will tell you what the number of blinks represents. Let us know what you get.
    denmar's Avatar
    denmar Posts: 3, Reputation: 1
    New Member
    		  
    #4

    Jan 17, 2008, 03:44 PM
    It is blinking 4 times. Thermal protection device open.
    therinnaiguy's Avatar
    therinnaiguy Posts: 153, Reputation: 5
    Junior Member
    		  
    #5

    Jan 18, 2008, 06:44 AM
    One of the sensors are getting hot and tripping. Look closely at the wiring diagram and follow the wires to all the safety sensors. I think this model has 3. One is found over the flame and has a rectangle mounting plate. Another one is is low in the burner box and I think there is one on the inducer blower. Test all of them using a multi-meter. Inspect them to see if any have a small reddish button to allow it to be reset.

    Once you find out which one is bad, inspect why it went off and correct the issue. It could be a dirty air cleaner, slow room air blower or a venting issue.
    denmar's Avatar
    denmar Posts: 3, Reputation: 1
    New Member
    		  
    #6

    Jan 18, 2008, 04:42 PM
    I ended up getting an igniter. It's working great now.
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