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I am replacing capacitor on central a/c unit. I have two brown wires and one red wire to reconnect. What wire goes to what post on the replacement capacitor?

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It doesnt matter as long as you have 1 brown on each leg the red can go on either one

Posted on Sep 13, 2010

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The fan capacitor may be bad or the motor it's self is seizing up and will need replaced.

Second portion of post:
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  2. Black To the contactor where the black was originally connected
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Brown wire is Start
Yellow wire is run or Power
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The other two taps are speed taps, but you have a single speed application
And high speed is what you need ,that’s why there’s not any wires
on Red and Blue if high speed was to much then you would move the
Black wire to one of the other taps RED low speed or Blue Medinm speed
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but the capacitors don’t last as long as they used.
Any time you put in a new motor always replace the capacitor
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