Question about Magic Chef CTB1821AR Top Freezer Refrigerator

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Run capacitor how can i tell if the run capacitor is good

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If the motor starts and runs the capacitor should be OK.
Disconnect power, discharge the capacitor (if there is a spark noticed when discharging it it may be OK)
Inspect the relief port to see if it has relieved pressure (some capacitors).
Isolate the capacitor from the circuit and check it with a capacitor tester. It should match the capacitance rating on the capacitor (MFD). Or if you do not have one measure the resistance with a VOM first one way, then reverse the leads and measure the resistance the other way. If the meter goes high and then low that capacitor may be OK. A failed capacitor may show an open circuit or a short circuit, but one that has some capacitance left will kick the meter. without the capacitor tester you may not know if the capacitance is still as rated. It is not that expensive and if there are no other problems replace the capacitor

Posted on Mar 19, 2009

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Try this guide :)

Posted on Jan 15, 2008



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York 80 diamond compressor fan is not do you tell if the fan motor is bad?

Check capacitor if its good then Ohm the wires to motor if common to start winding or common to run winding is open then motor is out on internal overload ( overheated) cool with water until windings are closed check voltage to motor. If capacitor good windings closed and correct voltage to motor then motor is bad. Also if windind from start to run is open motor is bad. But be sure wires going to motor havent been damaged or cut into. Also if there is any circuit board with fan relay be sure relay is closed and voltage going in and back out to motor.

Aug 23, 2012 | Heating & Cooling

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Rheem condenser fan don't spin up under it'sown power.

If you have a multimeter that tests "uf" or "mfd" that is microfarads. That will test the capacitor. Turn off power to unit, touch top of cap with insulated screwdriver across terminals to discharge and remove fan and common. MARK WHICH WIRES GO WHERE. Or if no mfds on multimeter, amps×2650÷volts=mfd. Amp draw on fan wire off of cap times 2650 divided by the volts between common and fan on the cap. If cap is good it's likely the motor.

Apr 12, 2017 | Heating & Cooling

1 Answer

Weather king model 13pja36a01 Heat pump The outside fan runs slowly, compressor starts then immediately stops. I replaced the run capacitor, I believe this might be the fan motor going bad but I...

If you have replaced the run capacitor and the fan still is running slow you definitley need to replace the motor no doubt. you can go online to or find one by your house. Your compressor is going off immediately because high pressure thats a good thing. Get a new fan and a new capacitor and you should be good.

May 09, 2011 | Weather King 10AJA3601AH Air Conditioner

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Hi my name is tony! I have a Goodman A/C cplj36-1B My a/c not cold,the condenser fan not run and motor is very hot.I replace the new motor but still not running may you please tell me what wrong? Thank you...

Hi Tony. It sounds like you still need to replace the capacitor. The capacitor is located inside the electrical compartment on the outside condenser and will be either round or oval with 2 or more wires connected to it. They are usually held in place by a small metal strap and a screw. The motor that you have just bought will have a capacitor rating on it which will say how many Micro-Farads (Mfds) are needed. For example: 35uf/5% They usually run around $10.00 and will save you a ton of money replacing yourself. You can pick these up at your local A/C supply store. Just be sure to get the correct size and you should be good to go as long as you haven't burnt anything up by over-heating the motor. Hope this helps and good luck!

Aug 24, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Should the wires coming from the run compacitor have power

The run capacitor is not a mechanical device, so the clicking that you are hearing is not actually coming from the capacitor. If you the wires going to the capacitor, (isolate the capacitor), you can check the microfarad rating of the capacitor to ensure it is still good using a multimeter. Hope this helps.

Apr 15, 2010 | Refrigerators

1 Answer

P291-3554RS dual cap is the Carrier part that is called for.

Are you talking about a start capacitor or a run capacitor?
Usually a dual capacitor is a metal can type capacitor with 3 terminals.
C - which is run for compressor and fan.
Herm - is start for the compressor.
Fan - is start for fan.
A start capacitor is a black plastic capacitor
It is in series in the run wire to the potential relay, one side goes to run on the run capacitor and the other side goes to #1 on start or potential relay.

Feb 13, 2010 | Heating & Cooling

1 Answer

Blower will not come on

could be the fan relay is bad. or the run capacitor. if these check good. you may have a bad heat sequencer. hard to tell, if you thave a/c you can turn thermostat fan swith to on and if blower comes on then relay and capacitor should be ok. some units have two or three heat sequencers 1 controls fan and the others control heat strips hopefully this helps good luck

Jan 04, 2009 | Kitchen Appliances - Others

1 Answer

When my furnace goes to start the blower motor whines or sounds like it is having a hard time starting up? If you turn the blower wheel it seems to turn freely? Could it need a motor or a run capacitor?...

Motor is getting old. The start side of the motor is getting weak. I would replace the motor and when you do the capacitor is a good idea to change also. ken

Dec 24, 2008 | Ruud UBHC Air Conditioner

1 Answer

Fan will not start on it's own

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.

Jul 22, 2008 | Coleman Mach 15 Air Conditioner

1 Answer

Ruud heat pump capacitor size

A hard start or turbo 2000 will not work if the run capacitor is bad. You will need to contact a ruud supply house or dealer with model and serial to find out the exact match. I have checked my sources and came up empty handed. You could try getting a 35/5 MFD at 440V or a 45/5 MFD at 440V as these are the most common capacitors used in Rheem and Ruud equipment. The key is that you will need to check your amp draws on both motors against the nameplate rating to make sure that you are not over-amping the motor. Also check the nameplates on both of the motors. Most condenser fan motors and some compressors list the capacitor size they require in a somewhat less than conspicious location on the label.

Jun 26, 2008 | Heating & Cooling

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