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View Full Version : Should the fan run when the heat is on


blbdl1
Dec 11, 2012, 02:52 PM
Should the outside fan run when I am running the heat
And there are two lines on the outside unit what are they for and which direction should the valve be turned

Grady White
Dec 11, 2012, 06:35 PM
Sounds like you have a heat pump & yes the outdoor fan should run in heating. Of the two copper lines, the large one should be hotter than the small. DON'T MESS WITH THE VALVES.