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Mend Goodman HDD20N11501A Fan Runs Constantly

induction fan runs constantly?

my HDD20n11501A 90%eff. snorkle induction fan for combustion air for central forced air heat will not turn off. I have replaced the main circuit board aready. Fan should cycle off/on with unit.

Jim
January 2009
GoodmanGoodman HDD20N11501AHeating, Home Heating SystemsFan Runs Constantly

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Goodman HDD20N11501A Fan Running Constantly