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Electronics why we use capacitor in fan ?

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Have med. speed in t position

Posted on Jun 11, 2008


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Gud day,
capacitor use for starting & running of fan motor.



Posted on Mar 09, 2008


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Where can I get a replacement capacitor for a hunter ceiling fan - Model 25564

capacitors that size are available on line from e-bay or from electronic stores like jaycar
you could try wholesale electrical stores that sell to electricians or a specialist fan retailer

Mar 14, 2016 | Hunter Dryers

1 Answer

HOLMES TABLE FAN MODEL HOAF12R I know it's an older fan but i think it would be cool if I could fix it possibly.. usually leaving it on over night in my room. I turn it off today, get home turn it on. The...

Stacie, it sounds like you have a bad fan motor start capacitor; easy fix. Unplug the male connector from the wall outlet so there is no electricity running to the fan; dismantle the cover to the fan housing and look for a small (usually black in color although it could be a bare metal color) box that has two, maybe three wires to it. View the following youtube video so you get an idea of what your looking for...

Disconnect the wires (you may have to cut them off close to the start capacitor and solder them to the wires of the new capacitor- unless of course by design to your specific fan, the wires are connected to wire connectors) - you can try any electronic store (like Radio Shack) to match up the start capacitor- or go online to Mouser Electronics.

Here's the important thing to note, you have to match up the capacitor's specifications exactly - they are clearly marked on the body of it. As a matter of fact, Mouser Electronics has a great phone tech support group- just read everything off to them and they'll match it up for you and send it out ASAP.

I hope this helps.

Jul 03, 2014 | Refrigerators

1 Answer

Heating fan not blowing.

The hear fan motor in Cadillacs after 1993 are controlled by a speed controller. This is an electronic device that changes the speed of the motor based on a series of electronic pulses sent to the motor by a computer. The speed controller is a round circuit card located in the fan motor itself. One of the components, probably a 15 cent capacitor, has probably fried itself and the speed controller no longer works. If you are knowledgeable in electronics, you can probably repair this yourself.

Keep us updated.

Jan 18, 2011 | 1998 Cadillac DeVille

1 Answer


You can use any capacitor of value about 3.3mF to about 6.8mF with an AC voltage rating of about 230 to 250 volts.
These are the bipolar type capacitors and is generrally available at all electrical or electronic spare parts shops.
Hope this helps.

Aug 29, 2010 | Patton (HASF1016UC) Stand (Pedestal) Fan

1 Answer

After 8 months, fan will not start. Check 3 speed switch..OK, checked motor coil...OK check 110V supply...OK 5 microfarad start capacitor fails to charge/discharge. Need replacement, but can not find...

The latest Jameco electronics catalog ( has a 5 uF 370 volt motor-run capacitor for $1.95. It may however, be too physically large to fit in the motor case. Hope this helps!

Aug 14, 2010 | Lakewood HV9 Floor / Box Fan

1 Answer

Motor stopped running. There is apart encased in black housing with the nomenclature 3.5uF-U/250WV.AC. Is this a capacitor and should it be replaced?

Yes, that is a capacitor...exactly where is it located? It could be a starter capacitor. Try this, plug it in and turn the switch on then push one of the fan blades in the direction it would normally turn; if the fan starts up then it is definitely a starter capacitor issue. Unless you have extensive electrical/electronic experience, I would advise you to not try to repair this on your own, rather bring it to a reputable appliance repair shop in your area.

Sep 08, 2009 | Air King 9119 Stand (Pedestal) Fan

3 Answers

Casablanca fan only runs at highest speed

When I turn on any of the fan speeds fan does not come on. When I remove the blades and turn on the ceiling fan on and give it a push the fan stays running. What could it be?

Aug 30, 2009 | Casablanca Fan Panama II 50" Ceiling

2 Answers

Whirlpool ACQ128XRO air conditioner kept tripping the circuit breaker. Now the fan will not work on it.

When it was running (working), did you hear the unit thermostat click on and off; was cold air comming out at all? Check capacitor may be faulty causing the unit overload and trip the breakers. Check the electronic control board might also be bad since the unit is not working. Bad motor can also trip the breakers before it burn out. Fan motor 60 bucks, capacitor 54 bucks and control boad 105 bucks. hope that help some.

Jul 29, 2009 | Whirlpool Electronic Window Air...

1 Answer

Connecting a motor starting capacitor

New Capacitor

herm start on the compressor
fan start on fan motor
c run or power to both compressor and fan

Apr 25, 2009 | Kenmore 75085 Air Conditioner

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