Last week I discovered my condenser fan motor not running and the compressor overheat tripping. My unit is a split system Amana 3 ton unit. I replaced the fan motor and again it did not start but with a quick spin of the blades would run but not start on it's own. I referred to a friend who said in might be the dual run capacitor, so I replaced it. No start. I then used the single run capacitor which my supplier sold me along with the new motor and wired it per motor diagram using brn wire and brn/w wire on the 2 terminal capacitor and connected black and orange to mains and it runs fine. Question- it should run on three wires Brn,blk,orange using dual run capacitor and not need brn/w wire in this system. What else could be wrong?