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

    Nov 23, 2010, 12:16 PM
    I have a Goodman model: GUPI075-3 gas unit heating system.
    When the outside A/C unit cuts off the fan inside stays on. I tried changing the thermostat already. Do you think it is the fan relay? Is that on the circuit board?
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #2

    Dec 18, 2010, 08:51 PM
    Are yo sure that's the correct model #. Some of the sytems use a sequencer to time on and off the blower, some use the time delay in the control board and the real old ones just used a simple relay. All are capable of sticking closed, keeping the blower on.
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