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How do you replace a fan capacitor

How do you replace a fan capacitor

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Remove the unit from the wall,then remove the outer cover and locate the oval capacitor,it will have a H/C/F marking on the end where the wires connect,the h is for the compressor,the f is for the fan circuit and the c is the capacitors common terminal,be sure to discharge it before touching this component because there are 2 caps in this oval unit

Posted on May 13, 2010


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How to wire Dayton capacitor E136401

It appears this is a 7.5 microfarad (mfd) capacitor like the ones installed on fans. If your fan motor has two brown wires, in addition to the black and white power wire, just fasten the two brown wire to the leads on the capacitor and insulate the connection with electrical tape and mount the capacitor in some dry convenient location inside the controls section of your unit. Be carefull to mount the capacitor in a location where it does not short an electrical connection.

If the capacitor is replacing the low side of a dual capacitor, for example a 35/7.5 capacitor, extend another lead from the common side of the dual capacitor to one side of the 7.5 capacitor and place the one brown lead from the fan motor to the other lead on the capacitor. If trying to replace the lower side, it is better to just replace the dual capacitor.

Aug 19, 2014 | Goodman Heating & Cooling

1 Answer

It is a Ruud UAKA-024JA2 combination of air conditioner and central heater. The outside air conditioner fan stopped running but buzzed. The capacitor is out of order. Do you have instructions how to locate...

I'm not sure how you determined that the capacitor needs replaced without being able to check it. But the capacitor is the round tube attached inside the box. It will have several wires coming from the top. it sits down in a round hole and is held in place with two screws. Rudd usually (although not always) have gray plastic capacitors. note when you disconnect the capacitor which wires go to herm (that is your compressor) fan and common. Usually the fan is brown and the compressor is yellow or orange. there are usually two wires on the common. Note how many microfarad the capacitor is and replace with same rating. the 5 microfarad side is for the fan. I would however replace the whole capacitor.

Aug 25, 2011 | Ruud UAMB Air Conditioner

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Fan outside isn't running and when turned on the unit outside is running very loud.

The fan outside keeps your compressor cool, the compressor, if left running without the fan running to cool it down can get damaged, the fan normally gets its power from a switch box located outside or near
it. or the motor on the fan could have just gone bad. the fan motor is not as expensive as the compressor to replace. its easy to replace. sometimes what goes out 1st on these motors is the capacitor,the capacitor stores enough voltage to give the motor that extra push to turn. many times its just the capacitor that goes out. when you purchase a motor make sure you also get the matching capacitor.if you can turn the fan and it starts running, its the capacitor, if it starts running and has any kind of bearing noise then you will have to replace the motor. good luck!

Aug 08, 2011 | Heating & Cooling

1 Answer

Fan not blowing outside on ruud achiever series

try starting the unit and with something that can fit tru the grill try spinning the fan blade in the direction that it supposed to turn check either direction just to be sure, if the fan starts then replace capacitor. if it is stuck then replace capacitor and motor. there could be other causes for the fan not turning but this are the main causes. picture one show a dual capacitor used for compressor and fan bottom picture shows two capacitors the smaller one is for the fan. best of luck and always follow safety guidelines when working with high voltage capacitors can still hold a substantial electrical charge even when all power is off.
raypena_1.jpg raypena_2.jpg

May 29, 2011 | Heating & Cooling

1 Answer

3 ton unit compressor dont wnat to start

there is a capacitor connected to the compressor and one connected to the fan ... the capacitors are used to start both (called starting capacitor) ...if its bad then the compressor/fan may buz but not start will kick out once it gets hot .. that thermal cutout will reset when it cools down ... the capacitor may be a dual unit .. that is, two capacitors in one case (one for fan, one for compressor) ... you could have a frozen compressor or bad bearings in the fan but typically its just the capacitor thats bad (make sure the fan turns freely) ... follow wires coming out of the compressor and fan .. some will go to the capacitor ...thats a metal part (usually a rounded rectangular shape about 4 inches) .. the 3 or 4 wires just plug into the capacitor .. replace with the same value (microfarads and voltage) or get an exact replacement using its part number ... mark what wires go where .. make sure power is off befor servicing ..

Jul 25, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Compressor works but compressor fan does not

It is possible the capacitor has gone bad, cause, possibly a power surge. Suggest replacing capacitor first and see if problem happens again then I would change fan motor and capacitor. Good luck on your repairs


Dec 07, 2009 | Heating & Cooling

1 Answer

Goodman A/C model ch42-1 cooling fan not working

These motors start with the capacitor,that could be the problem in most of the cases ,but sometimes even if the capacitor is new they don't start or after a while they stop by overload.First try replacing the capacitor(no more than $10) and keep an eye on it beacause if this fan at the condensing unit doesn't work it could damage the compresor.

Apr 23, 2009 | Goodman CKL42AR42 Air Conditioner

2 Answers

RV A/C fan won't start on its own

This could be the problem. It is more likely that the motor bearing is bad. Take the fan capacitor and have it tested. Or replace it, (under $20). Was the fan motor loud before this happened? Hopefully it is just the capacitor, the motor runs $60 - $100 and is a FUN to replace.

Jul 02, 2008 | Coleman Mach 15 Air Conditioner

4 Answers

Breeze ceiling fan not working

We were able to get 3 fans running again by replacing the capacitor which had melted in all 3 fans. On one of the fan's the casing around the motor was extremely hot, which prompted us to act quickly. I suppose the fan had been trying to start itself. We purchased the capacitors at an electrical supplier at a cost of $15 each. We were not able to locate the type of capacitors which came with the fan. I am now looking for replacement capacitors at a lower cost if possible. Does anyoe have suggestions of a reputable online dealer for capacitors at a reasonable cost? I would like to keep some on hand.

Apr 29, 2008 | Aloha Housewares (93645) Ceiling Fan

1 Answer

Fan stopped working

The problem is NOT the motor. This is the most stereotypical, quintessential, textbook case of capacitor failure. The capacitor is a small rectangular black box located in the fan's switch housing (there may be one, two, or three capacitors) with colored wires coming out. The capacitor regulates voltages, and gives the fan enough torque to start, then keep running at the appropriate speed.

Capacitors are inexpensive to replace. Some replacements are available at your local Home Depot or Lowes; if they don't have the right one, go to Radio Shack. IT IS IMPERATIVE that the replacement capacitor you buy has the EXACT same values -- same voltage, and same microfarad rating (written as a number followed by the letters MFD, or the micro-sign and the letter F: µF). So, for example, it might say "277v 2.5µF" or "277v 2.5 MFD" -- and the replacement capacitor must have the exact same values. It must also have the same number of wires coming out of the top. However many capacitors your fan has, that is the number you need to replace, since you don't know which one is blown.

If you have any other questions, feel free to ask!

Apr 26, 2008 | Hampton Bay 24002 Ceiling Fan

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