||08-18-2012 09:56 AM
Need help replacing HVAC condensor fan motor - 3 wire old to 4 wire new
I'm replacing my old three wire condensor fan motor with a new four wire fan motor. The capacitor is a dual run cap with three terminals. The old wires were red (goes straight to T2 on the contactor), brown/white (goes to cap), and black (goes to fan terminal on a circuit board which I think is the defrost relay). There's a terminal on that same board marked "cond" right next to the fan terminal, and that terminal is wired with a black wire to T1 on the contactor, so I'm thinking this is just a connection bridge for the fan to T1 where it hits the relay first.
On the new motor, it has brown and brown/white, which both go to the cap, and two line wires, white and black. I believe the white wire would correspond to the red wire on my old motor and the black to the black.
My question is, to get the CW rotation I need on the fan, the new motor says to switch the white and black wires. Since the black wire on my old motor goes to the circuit board first rather than to the T1 on the contactor, is this going to cause a problem for me?