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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

home Fix label Heating label_important Home Heating Systems

Fix Fault - Heating

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Fix Fault - Heating

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home Fix label Heating label_important Home Heating Systems

induction fan runs constantly?

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induction fan runs constantly?

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induction fan runs constantly?

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