[gquitugua]

Awhile back, my A/C condenser fan motor was making a really bad noise and wasn't turning at all. It was a GE motor with a GE Capacitor (Split Cap). I ended buying a Dayton(Grainger) motor as well as the accompanying cap. (I read that when replacing motors, you should always replace the cap). So I replace the motor and mount it all up but a bit confused with the wiring. At first, to prevent confusion to myself, I just used the old cap and connected the brown, purple, and black leads (See 2). I figured it should work no problem. Well I connected it all up, taped up the brown/white lead and tried to turn on the AC unit. I heard a click and hum which sounded like it was coming from the compressor. Fan did not turn. So I figured, ok ..well maybe I should try Grainger's recommendation (See 3). The only problem was that on the original motor, the L1 did not go directly to the cap, it went from the connector block (Middle Square on the A/C schematic) to the Circuit Board and then to the cap. I'm assuming this is for control logic as my system both cools and heats. Anyhow, I wasn't confident hooking it up directly so I ended up connecting it as pictured in 2 (Grainger Connection). Tried to power on the AC and got the same thing: click and then hum. Any suggestions on what I'm doing wrong/missing? Any help is apprecitated. Thanks.


I made some PDF files to help with the picture.

1.) This is the schematic from both the new motor and the A/C unit:
AC.pdf

2.) This is how I attempted to hook it up:
AC2.pdf

3.) This is the layout that Grainger sent to me:
Grainger.pdf

[gwr]

Try bypassing the control board and place the purple wire on t1, the diagrams are correct. You may have a faulty control board.