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We recently bought a new house (to us). It has a Goodman heat pump and Goodman Electric backup furnace(A36-15) with a Janitrol stat. I switched the stat to emrg. Heat when the temp got below Frezzing. The heat pump and the heating elements now both run at the same time. The outdoor unit will run when it is 15 degrees outside still. I check the out outside stat to see what it was set on and the outside one is set at 40 degrees. Is this normal??? thanks Jon

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  • theemudracer Dec 11, 2008

    The T-stat has only W2 on it with a White wire hooked up to it.

    Orange wire is in the O spot and red wire is in the R spot.



    Hope this is what you wanted.

  • theemudracer Dec 13, 2008

    I have a meter. I had 24 volts on the yellow wire with the EH off and the system running. When EH was on I had no voltage on yellow for awhile (5 min) and then it would kick on.



    I bought a new stat and got it hooked up today. EH is on and no compresser running yet. (CROSS FINGERS)



    thanks and I will let you know if I have problem again.

  • Danny Clark
    Danny Clark May 11, 2010

    No, its not normal for the HP to operate when in Emergency heat mode.



    I would start by looking at how the T-stat is wired.

    is there a jumper between W1 and W2?



    where are the orange, white and red wires hooked up to?

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If you have a volt meter, check to see if you have 24 volts coming from the thermostat on the yellow wire.

If you do, and it is set on emer heat, you have a bad T-stat.


It looks like it is wired properly.

If you have no meter, you could try changing the stat, I reccomend Honeywell or white rodgers.

Let me know if you eliminate the Tstat as the problem and we can go from there.
Chances are its the stat.

Posted on Dec 12, 2008

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