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Replaced old Ge 1/2hp fan blower motor w/ emerson motor wire not the same couldnot get to work. motors has blk,blue,red,white/brown, brownw/white strip/furance wires are blk,red,white could some tell me how to wire correctly Thanks

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Hello GREG Black=hi speed blue=medium speed red=low speed white/brn=common or white . brn/white=line 2 leg of 220 volt.110volt furnace is black to black=cool speed blue unused(tape/wirenut end)red to red=heat speed white/brn to white=common brn/white unused(tape/wirenut end).Blue can be used instead of red if you want more airflow on call for heat.Just tape off red wire.

Posted on Aug 03, 2010

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I am assuming you still have both motors, if you look on the side they will show you what wires go to what. Your Brown/white should be for the capicator. blk should be blk, blu might be white and red be red. I couldn't really say for certain with out looking at the diagram on the side of the motors. I hope this helped Tim

Posted on Aug 03, 2010

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Iam replacng my home a/c blower motor. My unit hasa red a black and a white wire. My new motor has a black wire a blue wire a red wire and a yellow wire. I need to know which color wire goes to which


On the original motor, red was low speed, black was high speed and white was common. The new motor should either have a diagram on the side of it or within the box for verification, but the black SHOULD also be high speed and the red wire SHOULD be low speed , the blue wire SHOULD be medium and the yellow SHOULD be common. However, you MUST verify those connections on the wiring diagram provided with the new motor before you connect or you will probably let out the MAJIC SMOKE !!! The speed you decide not to utilize can just be taped off and zip tied to the bundle.

You made no comment about two brown wires, and if either motor has two browns, they go to the run capacitor.

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Mars blower motor diagram?4 wires


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1 Answer

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Hi, the 2 - brown wires are for there own run capacitor they should have sold you. One of the browns will have a white stripe. The new cap has only 2- terminals and you put a brown on each side. The black and yellow wires are both hot which 1- will go to 120 volts on the load or out side of the contactor, and the same with yellow, 120 volts. This gives you 220 volts to run the motor. Look on the new motor and you will have a diagram or on a paper that comes in the box. The old motor used the dual cap to run the compressor to. The green is just a ground wire. Screw it to any metal part or screw. You should be able to put the black and yellow hot wires where the old black, red, or blue were as long as they are 120 volts which I am sure they are. Get a cheap tester when you go get the cap for the new motor, and check the old blk, red, and blue terminals to ground and you should have 120 volts on at least 2 of them. Put the new yellow to 1 and black to another, browns to the new cap and your off and running. Keep me posted. I do this everyday. Please be kind when rating me, thank you.
Shastalaker7
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1 Answer

EMERSON FAN MOTOR WHICH HAS A BLK WIRE PURPLE WIRE AND A BROWN WIRE WENT DEAD. SO I BOUGHT A NEW FAN EMERSON CAME WITH 4 WIRES BLK ,WHITH, BR AND BRW AND BRW WITH WHITE STRIPE. I WIRED IT BLK TO THE...


The two brown wires go to the fans capacitor. The capacitor should always be changed with the fan motor.

It sounds like your unit has a dual capacitor. One side for the fan and the other for the compressor. All you will be doing (After rewiring the compressor wires as they were originally.) is abandoning the fan side of the capacitor, and wiring your new capacitor to the brown and brown with stripe wires. It does not matter which terminals the brown wires go on.

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If this helps you please rate me accordingly and good luck.








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1 Answer

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