Goodman evaporator coil fan problem !!!!?

I installed a fan motor on my Goodman package unit but the fan turns slowly and in the wrong direction....What did I do wrong ??? There are only three wires to the fan motor but the only wire color they had in common was black>>>>> Any Ideas would be appreciated !!!!

DAN THE AC MAN2009-02-02T15:12:42Z

Favorite Answer

1st thing,is the new motor the same voltage as the old one?,same horsepower?...does the new motor turn in only one direction as indicated by an arrow on the info sticker or elsewhere on the motor,or is it reversable?......sounds like you may have switched the common wire and the capacitor wire...did you install a new capacitor of the correct microfarad [ abbreviated "uf" or "mfd" ] value? its possible a bad capacitor may have contributed to the failure of the old motor....need more info....if possible,pictures of the old motor and new motor with wires clearly visible might help if you know how to post those.........dan

Comp-Elect2009-02-02T15:29:19Z

Hello

Are you talking about the inside unit blower fan for forcing the air across the evaporator coil and trough some ductwork?

If so, did the original fan motor have a capacitor (Condensor)?

Is this a 2/dual speed motor.

Here is a link to a diagram of the blower fan motor (2 speed with condensor):

http://www.hvacmechanic.com/forums/hvacr/messages/17890.htm


You have to get the wiring diagram for you new motor to check which wire is common, which is the low speed and which is for high speed.

Follow the diagram for equivalent connections.


Good Luck

The One, The Only, AMERICAS TEAM2009-02-02T15:06:13Z

You have the wrong motor, you need one that runs the opposite rotation or one that is reversible.

rudee_5592009-02-02T15:06:25Z

switch the other two wires but that really shouldn't matter since it's proabally a 110v single phase fan it should not affect the rotation but you nver know.