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Old 10-31-2021, 10:45 PM   #7
rohrmann
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Join Date: Oct 2012
Location: Box Elder
Posts: 4,725
M.O.C. #12947
Whether you have a heat pump or just an A/C, if the fan control is on any position other than AUTO, the fan in the A/C unit will run when the gas furnace is running. The compressor is not running, just the fan.
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