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Fan will not start on it's own

Thanks for the info. I am having the same problem. Mine is wired with what looks like 3 capacitors, one is marked starter relay. Do you think it could be the starter realy? Also do you know where you can get these tested / purchase new ones?

Thanks

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The fan only has one capacitor. The other two are for the compressor, one is a start capacitor and the other a run capacitor. A schematic should be on your fan motor telling you witch two wires run to the start capacitor for the fan motor.

Posted on Oct 19, 2008

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Table fan winding&connection daigram


  • I have a Bionaire brand table electric fan.
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    • The electric motor is a BM-122 Decomin brand 3 speed motor.
      • There are 6 wires:
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        • Black wire.
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  • This fan has an oscillating grill with independent sync motor, and timer circuit.
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  • I decided to change controls to a simple mechanical switch and fore go for now anything beyond 3 speeds.
  • The printed circuit board shows the following connections:
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        • Medium fan motor speed
        • Low fan motor speed
  • I think the gray wire goes out to the oscillator motor.
    • The Red wire is marked as Line, for the power source.
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    • Checking the Motor and Capacitor Connections
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    • You should see that there is a separate motor winding for high speed.
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Sep 29, 2016 | Dryers

1 Answer

Need capacitor wiring diagram


No model number gotta shoot from the hip on this one:

The cap has 3 sections: Herm for compressor, F for fan, and C for common.
The common section of the cap gets a hot wire off the power cord, a wire from compressor marked C on compressor and a white common wire from the fan gets connected to C on that cap. These wires are almost always white in color on American OEM. The fan has a small brown wire that connects to F on tha cap. The compressor has a wire marked S on it make a note of that color wire and connect it to the section on the cap called HERM. Herm stands for hermedtically sealed compressor. So both your commons and a hot wire go to C. You need one small brown wire which goes to F from the fan. One wire marked S on the compressor goes to Herm for compressor starting. S stands for start winding.
Lets look at typical American fan motor wires: The fan has a black wire for high speed a blue wire for medium and a red wire for low. It has white wire for common, and a brown wire for capacitor. Connect your common fan wire to common and the brown wire to F.
With that cap properly connected basically all you would need to do to make it run is connect a fan speed, the compressor wire marked R for RUN, and and the other power wire.

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Jul 20, 2011 | Fedders AEY08F2FCOM Wall/Window Air...

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I have a 5,200 BTU Maytag window AC. The fan will not start when turned on. The motor hums but will not turn. I lubricated the bearing so it will turn very easy. Is there a starting capacitor for that...


The motor could have or not have a capacitor. You will be able to know if you can look at the wiring diagram which will be on the unit under the case, or disassembling the electrical compartement. The capacitor will more than likely be in the electrical compartment. It will look like a battery, and will probably be a 3 post capacitor. The fan will be connected to "common" and "fan".

To check the capacitor you will need an ohm meter. Unwire the capacitor on the fan and common terminals, marking where the wires go before you pull them off. Take the leads of the ohm meter, turn the meter to its highest ohm setting and touch the two posts with the leads. If the capacitor is good, the needle of the ohm meter will jump up, and then back down. If the ohm meter does nothing the capacitor is open, if the ohm meter needle jumps all the way over and doesn't come back down, it is shorted.

Jun 20, 2011 | Maytag Chassis Built-In Air Conditioner...

1 Answer

I have to replace the start/run capacitor (97F9971 - Duel Capacitor/ 50, 7.5 370 VAC). I have marked the terminals before removing and purchased the new capacitor. The new capacitor has minor difference...


All the terminals are connected together so it won't matter which terminal you use, just as long as you have the Herm, Com, and Fan wires correct. Hope this helps!

Sep 27, 2010 | 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 ..it 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

Please help.... kenmore 580.74124400 AC wiring color coded for the capacitor. wires fell off and all else works compressor is not turning on


Take a look at the capacitor. A terminal with just 2 connections is for the fan and has a small brown wire from the fan there and is usually marked with an F. The compressor portion of the cap has 3 terminals on it, usually marked as HERM for (hermetically seald compressor), a large brown wire goes there most of the time from the compressor. The other 3 wires all are white and go to the portion of the cap with 4 connections usually marked as C for common.

Jul 06, 2010 | Kenmore 75085 Air Conditioner

3 Answers

AC fan running backwards


Check to see if it has some wires for reversing the direction. Some have four wires you can switch around to change the direction. If not make sure the capacitor is connected to the start connection and not the run connection. The wires for reversing the direction should be orange and yellow or purple and yellow and will be shorter than the rest. Hope this helps. Let me know what you find.

May 20, 2010 | Goodman GPC1342H21A Air Conditioner

1 Answer

How do I wire a new condensor fan motor to the new capacitor? The old capacitor is longer and it has 3 terminals. the new capacitor is much smaller and oval. It has 2 terminals. the fan motor has 3 wires,...


Before attempting any of these recommendations, First disconnect all the power sources and check your wiring diagrams on the motor and condensing unit.
On the old capacitor if you look on the top near each of the three terminals. Are they marked, fan - C - herm? If they are that is a dual capacitor and that needs to stay because that is also your compressor capacitor.
The Red wire from the conductor is Run and it's connected to C on the old capacitor.
Follow the Yellow wire and see if it goes to the S or start terminal on the compressor, if it does then that is the Start wire for your compressor and it connects to herm on the capacitor.
For the fan motor a lot of times the wiring connections are printed on the motor label.
Check the label, Purple should be run and connect to C on the old capacitor.
Black should be Common and it connects to the opposite side of the contactor as the Red wire. If the Red wire connects to T1 then the Black wire connects to T2.
The Brown wire shoud be the start wire on the fan motor and it connects to the Fan terminal on the old capacitor.
Now if you want to use the new fan capacitor. Take the Purple wire from the motor and look for any marks (red paint or a dash) on or beside the terminals on the new capacitor. If there is an identifying mark then connect the Purple wire to that terminal, if no marks you can connect it to either terminal. Then you need a jumper wire from C on the old capacitor to the purple side of the new capacitor. Then take the brown wire and connect it to opposite terminal of the new capacitor.

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1 Answer

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There should be a wiring diagram on the back of the access panel. If you can't read it, check online for model wiring diagram. Don't guess, you may cause more expensive damage.

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2 Answers

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Jun 06, 2009 | Heating & Cooling

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