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    dijensen72's Avatar
    dijensen72 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jan 28, 2010, 09:40 AM
    Trane xv90 error codes
    The xv90 unit, red lt blinks twice, system lock-out. How would that be repaired?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jan 28, 2010, 11:16 AM
    Look on the back of the blower motor access door for the blink/flash code and post it here. All furnaces have this legend posted on it and it is usually included with the wiring diagram which you will need for the answer so you can find the part possibly causing the problem.
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