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

    Aug 1, 2010, 07:40 AM
    Trane xv90 blower motor doesn't. Motor is free, unit is 7 years, not t-stat. Thanks
    I believe I have troubleshot this down to either the blower motor or their Integrated Controller board. 120VAC to motor OK but too many other wires from board to motor for motor control to test (variable speed) without advice or a manual. Motor is rated for 100% duty cycle and has only been run that way occasionally. There doesn't seem to be a reset on motor - am I missing something. Didn't see a starting Cap - am I missing something? If it is the board is there a work-around until I can replace it? Thanks, Dave
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Aug 1, 2010, 01:37 PM
    Quote Originally Posted by nadageek View Post
    I believe I have troubleshot this down to either the blower motor or their Integrated Controller board. 120VAC to motor OK but too many other wires from board to motor for motor control to test (variable speed) without advice or a manual. Motor is rated for 100% duty cycle and has only been run that way occasionally. There doesn't seem to be a reset on motor - am I missing something. Didn't see a starting Cap - am I missing something? If it is the board is there a work-around until I can replace it? Thanks, Dave
    If that is a true variable speed motor you need special electric tools to check it out.
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    5. fixinall's Avatar
    fixinall Posts: 1, Reputation: 1
    New Member
    		  
    #3

    Oct 15, 2011, 01:49 PM
    Most likely the module on the back of the motor, I have read where the thermistor would be bad and is replaceable but on mine there are two burnt transistors
    Very difficult to find parts and the motor is obsolete and out of production
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