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    freezing2's Avatar
    freezing2 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Dec 30, 2012, 04:12 PM
    Cold
    I have a Colman central electric furnace model # 3400A818
    The heat seemed to work fine until temp outside falls below 30 deg.
    Took front panel off, blower works fine but coil elements only get slightly warm.
    It also has a heat pump and on the thermostat an emergency heat switch,
    When I tried to use it nothing happened.
    I'm kind of girly, but with good instruction and or advice maybe I could fix it.
    Don't have the money to hire out, also can't find manual that goes with it.

    It's 16 degrees outside any help would be much appreciated.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Dec 30, 2012, 04:51 PM
    Many older heat pumps, (and even many new ones) don't heat well once the temp drops below 30. The emergency heat setting on the thermostat should kick on the electric backup, and most likely will shut off the heat pump. Has the unit always done this, or did it just start not heating properly? Lots of options with a heat pump system with electric backup.
    freezing2's Avatar
    freezing2 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Dec 30, 2012, 07:59 PM
    Quote Originally Posted by mygirlsdad77 View Post
    Many older heat pumps, (and even many new ones) dont heat well once the temp drops below 30. The emergency heat setting on the thermostat should kick on the electric backup, and most likely will shut off the heat pump. Has the unit always done this, or did it just start not heating properly? Lots of options with a heat pump system with electric backup.
    Just moved in in September, previous owner was evasive with the workings of all appliances so all is new to me, all I was told about heater was if I use the emergency heat it would cost a fortune.
    I turned it on this evening and the coils got warmer then they did before gave some heat but I think it was 32 deg. Outside, going to fool with it again in the morning brrrrrr hope to have more accurate symptoms to report.
    Question, when you turn on emergency heat is it supposed to turn off the blower, and am I supposed to turn the fan from auto to on, when using EM, I turned EM on it just went quiet and I left it on for 5 minutes with no results.
    Anyway really want to thank you for responding, hope we can continue with my problem if it's OK with you.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #4

    Dec 30, 2012, 08:49 PM
    Quote Originally Posted by jimmy1997 View Post
    were i come from 16 degree's is our hotest
    This is from a 15 year old boy that has nothing better to do but troll... please ignore his rants.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #5

    Dec 31, 2012, 08:19 AM
    I know you say you don't have money... but you really are going to have to get someone in to look at it because you need the right tools AND the right knowledge because you will be dealing with high voltage with the Emergency heat (in effect electric heat) that can kill you.

    The difference between getting a really bad shock and with having your heart stop (in effect a fatal shock)... is what path the current takes going through your body.
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