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    rpmooney's Avatar
    rpmooney Posts: 1, Reputation: 1
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    #1

    Mar 16, 2009, 05:40 PM
    Carrier 58GS050-3 Furnace
    My blower won't cut off... I have installed a new circuit board and it still won't cut off unless I unplug it. If I leave it unpluged for a day or two it will work for a couple of days and then won't cut off again. Can it be the power transformer? I noticed that its running 28V between the red and blue connection.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Mar 16, 2009, 09:07 PM
    28 volt is about right,no,I don`t think it is the transformer. Is possible the fan control,/fan limit or relay. Look at the wireing diagram there shoud be a legand that will help you to identify the parts and where they are located
    bcurbox's Avatar
    bcurbox Posts: 2, Reputation: 1
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    #3

    Jan 16, 2013, 03:17 PM
    I have replaced my fan limit switch located middle of the front of the blower (2 prongs on outside of little rectangular faceplate with a sensor located inside blower plinum. Same issues. Have to take the door off the front of the heater to have the switch kill power to keep the blower motor from running constantly but heat or AC (depending which one is selected) will cut in and out to maintain temp inside house. Just that annoying running of the blower motor is a pain. Any luck fixing, email me at [email protected]
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