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Electric furnace blows cold air before and after warm air.

When my electric furnace first kicks on it blows cold air for the first 10-15 minutes. Eventually the air gets warm and heats the house. Then when the temp gets to the desired level the furnace goes back to blowing cold air again for another 10-15 minutes before shutting off.

I have a Lennox electric furnace that was installed new in May 1994. The attached heat pump is currently shut off at the breaker for various other issues - it needs replaced. The stat is an after-market digital stat that is only 4-6 months old.

Is this normal? Should I take off the heat pump wire inside the stat since I have the heat pump shut off?

Kevin - Reynoldsburg, OH

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  • Kevin Sponaugle Nov 30, 2008

    Well, I can't do that. My wires coming out of the wall are Blue, Orange, White, Yellow, Red, Green, Black, and Brown. The Black and Brown are not hooked up.



    On the stat, I have C B O W2 W Y Y2 RH RC G A



    Blue is on C

    Orange is on O

    White is on W2

    Yellow is on Y

    Red is on RH

    Green is on G



  • Anonymous Mar 13, 2014

    Ptac heat pump blows cold air

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It is normal. Your house has to go down a couple more degrees because the heat pump is not working. You can solve this by rewirng you thermostat. Take off the wire that goes to Y and tape off. Then take the wires that are marked w and e or w1 and put the wires to yellow. Do not run ac with it wired like this. If you need more information please post me back

Posted on Nov 29, 2008

  • Joseph Lillie
    Joseph Lillie Nov 30, 2008

    That is correct, you are disconnecting Y because it is your first stage of heat, your heat pump is not running at this time so it wont hurt a thing.

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