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Old 11-04-2007, 11:38 AM   #1
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Goodman GMP-075-3 Vent Fan


The vent blower on our Goodman GMP-075-3 furnace will come on and blow cold air into the house even with the thermostat turned off. I have to turn the circuit breaker off to shut it down. Does anyone have any idea what causes this?

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Old 11-04-2007, 11:51 PM   #2
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Goodman GMP-075-3 Vent Fan


Your time deley reley is sticking

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Old 11-06-2007, 10:33 PM   #3
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Goodman GMP-075-3 Vent Fan


This relay you are talking about is on the printed circuit board? Can it be replaced or do you replace the whole printed circuit board?
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Old 11-06-2007, 10:41 PM   #4
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Goodman GMP-075-3 Vent Fan


Is the blower motor or the inducer draft motor the one that runs all the time?
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Old 11-08-2007, 08:34 PM   #5
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Goodman GMP-075-3 Vent Fan


It's the fan that blows air into the house.
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Old 11-08-2007, 08:52 PM   #6
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Goodman GMP-075-3 Vent Fan


If that is the case you will have to replace the circuit board, The releys on the board are not interchangable.

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