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AC compressor fan running backwards

17K views 5 replies 4 participants last post by  beenthere  
#1 ·
I have a Trane XB1000 AC. I noticed the fan was turning in the wrong direction and pulling air in from the top. I changed the capacitor but it still runs backwards. Any idea what to do besides change the motor?

I know it was running correctly just a couple of weeks ago and no changes have been made to the wiring.
 
#2 ·
Outside Air Conditioner Unit: Fan Spinning in Reverse



Recently I replaced the contact relay and the capacitor (dual capacitor) on my 2.5 ton Payne outside unit.I thought that I wired everything on to the new capacitor correctly by following the wiring on the old capacitor.However, when turning on the unit, the fan on the outside unit spun counterclockwise. The unit was Sucking In Air rather than blowing it out, which is bad for the unit.


Solution: Originally on my unit the Brown Fan wire went to the Fan position on the old capacitor.The other Light Colored Yellow Fan wire went to the Common position on the old capacitor.However, wiring it the same way on the new capacitor reversed the rotation of the fan, thereby causing the unit to **** In Air.By reversing the Fan Wires on the new capacitor, the fan spun clockwise and the air was blowing out of the unit.On the new capacitor the Light Colored Yellow Fan wire was this time connected to the Fan position of the new capacitor and the Brown Fan wire was connected to the Common position of the new capacitor
 
#4 ·
Thanks for the suggestion. Unfortunately when I switched the wires on my unit it continued to turn backwards. It was worth a try
Is it a non reversible condenser fan motor ? There should be information on rotation on the motor nameplate specifications.
Take a look over on 'you tube' and see if they having anything that applies to your situation.