Let me start by saying sorry for the lack of information. That aside, I had a no cooling call and found a dual capacitor on a Bryant 3 ton condenser(about 10 years old)35/5 440 volt with the 5mf side for the condenser side bad. Put in temporary 5mf and left the compressor hooked to the 35mf of the old one. Went to United a picked up a new one. They did not have a round one ,only oval.Guy said same thing no problem. I hook up new capacitor and fan works great but no compressor. I did check capacitance of new capacitor and it was fine. Did I get a start instead of a run or vice versa? Could the original capacitor been both start and run? Why does the fan work but not the compressor? Any help is appreciated.