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Fan motor replacement carrier

The fan motor on my condensor unit died. Replacement (Dayton 4m261J) motor has different wires than original (GE P612S). I got a capacitor to match the new motor, has two terminals vice three on the existing capacitor. I don't know how to connect the new motor.

Posted by Anonymous on

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Posted on Jan 02, 2017

  • 143 Answers

SOURCE: Wiring compressor

The two terminal cap is only for the new fan motor. Connect the compressor wire back where you found it, on the 3 terminal cap. It's the terminal marked, "herm". The "common" terminal on the 3 terminal cap must still be connected to one side of the 220 power at the contactor. One side of the 220 goes to the common on the compressor. The other side of the 220 goes to the run winding on the compressor AND the common terminal on the 3 terminal capacitor.

Posted on Jul 22, 2008

meBNme
  • 334 Answers

SOURCE: I have a Trane XE1200

OK, locate the terminals on the capacitor marked "HERM"(Compressor lead), "FAN", and "COM".(common)

HERM and COM remian as they are.

The wire going to "FAN" (usually brown) will be placed on either terminal of the new capacitor. (This is the ((usually brown)) wire comming off of the fan motor.) An additional wire needs to be run from the other terminal of the new capacitor to the "COM" on the old capacior.

What you are doing is bypassing the fan side of the old capacitor but still using the compressor side of the old Cap.

The fan should have a wiring diagram on it to help identify the wires if there is no brown wire. The other two wires will be identified on the wiring diagram as well, but one typically goes to the contactor and the other to the board.

Posted on Sep 07, 2009

  • 674 Answers

SOURCE: unsure of capacitor terminations for ao smith condensing fan moto

Does the motor data plate say anything about the motor. You can hook up a motor like yours with 3 wires. First use an ohmmeter and check the resistance between the brown/white wire to the black then the yellow wire. The resistance between brown/white and one of the others should be pretty much 0 ohms. If not check between the brown wire and the black and the yellow. Which ever wire has 0 ohms with the brown/white wire is the common leg. You can put a wire nut on the brown/white, it will not be used. Next the brown should be for the start winding and the other wire left over will be the run winding. Then connect the common to L2. L1 will go to the run winding and one side of the capacitor and brown will go to the other side of the capacitor. I hope this isn't too confusing. Let me know if I need to explain it better.

Posted on Jun 09, 2010

Testimonial: "Thank you very much for your help-I had the motor leads reversed and when I placed the brn/white to the common on cap like someone else had instructed it of course shunted out and blew the fuses in the disconnect. I used my meter(duh) and switched the motor leads. We got air!! THANK YOU!"

heatman101
  • 43501 Answers

SOURCE: Original AC Condenser fan motor had three wires L1

Hi,
Yes, that can be confusing...hook the tan wire with the white strip onto the same line wire as the one going to the capacitor...usually the L2 wire....so then in reality you have the two tan wires hooked onto the common and the F terminals of the cap...

heatman101

Posted on Aug 16, 2010

  • 674 Answers

SOURCE: I bought a replacement Dayton electric condenser

The tan/white wire can be insulated/capped and not used. Use and ohmmeter to take a resistance reading between the tan/white wire and L1 & L2. There will be no resistance between the tan/white wire and one of the others. This will be the common wire. Connect it to one side of the contactor. Connect the tan wire to the fan terminal on the contactor and the other wire to the common terminal on the capacitor (that is if you have a 3 terminal capacitor, if you have a 2 terminal capacitor connect tan to one side and the other wire to the other). Then connect the other side of the contactor to the common terminal on the capacitor (on a 2 terminal capacitor connect the contactor to the side that doesn't have the tan wire on it).

Posted on Aug 16, 2010

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