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    Glen Allen's Avatar
    Glen Allen Posts: 2, Reputation: 1
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    #1

    Oct 19, 2008, 11:14 AM
    Air Handler will not run on heat
    I have a heat pump. This weekend, when I cut the heat on, the outside unit runs but the air handler will not run. It will run on cool. Can any one help?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 19, 2008, 06:39 PM
    Are you saying the fan does not run to blow the heat out of the inside unit in the heat pump mode but works in the A/C mode?
    Glen Allen's Avatar
    Glen Allen Posts: 2, Reputation: 1
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    #3

    Oct 19, 2008, 06:42 PM

    That is correct. The fan does not cut on at all in the heating mode. It does work in the AC mode. My wife said when the AC was on a couple of weeks ago, the outside unit was running but the airhandler was not running then either.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Oct 19, 2008, 07:07 PM
    It could be the motor or the control controlling the motor. There should be a wiring diagram on the back side of the blower door. Get your meter and start checking for open electric circuits in the blower circuit area.
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