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

    Jun 7, 2010, 07:32 PM
    Have older model Heil HVAC the fan blower works on heat but not on cool .
    We have tried everything .Cleaned the coils on the outside unit , changed the thermostat and still the inside fan does not blow on cool but it works perfectly fine on heat .We also tried fan only and that didn't work either .
    twinkiedooter's Avatar
    twinkiedooter Posts: 12,172, Reputation: 1054
    Uber Member
    		  
    #2

    Jun 7, 2010, 07:40 PM

    It's the contactor switch. Needs replaced. Same thing happened to me.
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