I am wondering if this is normal. I recently bought a Goodman split unit heat pump and condensor. Whenever it gets below 40 degrees, the heat works fine, but it seems to rarely go off. So it blows for 20 to 40 minutes, then it is off for about 5 minutes, then it blows for another 40 to 50 minutes, then off for another 5 minutes, and so on.
Is this normal?
I also hear occasional buzzing in my circuit box, so I am wondering if the two are related.
Thanks for any suggestions.