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

    Aug 4, 2010, 06:09 PM
    ST9120U1011 air conditioning doesn't work
    Replaced fan board and heat cycle works but cooling does not
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Aug 4, 2010, 06:14 PM

    Guessing that is the PC board part number. Need more info, does anything work, outside, inside. Does fan run when cooling is on, does outside unit run?
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