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    sseager's Avatar
    sseager Posts: 4, Reputation: 1
    New Member
    		  
    #1

    Dec 1, 2009, 10:13 AM
    Carrier 58gp blower will run then off then on for 2 seconds
    Cycles through fine then blower powers off then back on for 2 seconds then back off?
    sseager's Avatar
    sseager Posts: 4, Reputation: 1
    New Member
    		  
    #2

    Dec 1, 2009, 10:20 AM

    Fan blower switch?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Dec 1, 2009, 01:04 PM
    It is possible the blower fan control is the problem. The furnace residual heat is reactivating the blower more than likely.
    sseager's Avatar
    sseager Posts: 4, Reputation: 1
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    #4

    Dec 4, 2009, 09:45 AM

    Thank you hvac1000 - all seeing eye.

    Question, if I replace the circuit board would that fix the problem. i.e. "blower fan control" located on the circuit board?

    PS I have an a extra board on site.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #5

    Dec 4, 2009, 10:26 AM
    Keep a copy for your use.

    http://www.xpedio.carrier.com/idc/gr...8gp,gs-2si.pdf

    I see no specific fan temperature sensing control on this unit so it must be controlled off the board.
    sseager's Avatar
    sseager Posts: 4, Reputation: 1
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    #6

    Dec 6, 2009, 02:27 PM

    I have 2 of these Carrier units in my house one up and one down stairs.

    I switched the limit switch located in the baffles that senses the temp of the baffles from the one that was working properly with the one that was not. Result same problem - blower on off on off on then finally off.

    Replaced circuit board and it fixed the problem.

    Thank you again hvac1000 for your time and interest in my problem.

    You can do it we can help...
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #7

    Dec 6, 2009, 04:01 PM
    Glad you got it going.
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