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    gdlee's Avatar
    gdlee Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 24, 2013, 02:40 PM
    Furnace fan speed on startup
    Does the fan on an older 1970 or so wesco electric furnace start on slow speed or directly on high speed? Having trouble with the unit cycling off too soon when first starting up in the am. Have replaced the sequencer relay and have the fan off switch set as low as possible without the fan failing to shut off at all and blowing cool air. Around 80 degrees.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Mar 24, 2013, 03:04 PM
    A 1970 unit most likely only has one speed. Is this a belt driven fan?
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #3

    Mar 25, 2013, 12:16 PM
    Your problem is likely due to cold air being drawn through the furnace & shutting the fan off due to low temperature. I've never seen an electric furnace with a temperature controlled fan.
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