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Customer Questions and Answers for Run Capacitor (23.5 Μf) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18059322
Manufacturer Part Number: WPW10334457

This run capacitor helps start and keep the motor running smoothly by providing the necessary phase shift and torque boost. A weak capacitor can cause hard starting, humming, or intermittent motor operation.

  • Supplies continuous phase shift to maintain motor rotation
  • Helps the motor start reliably under load
  • Symptoms can include humming, slow or no start, or overheating shutdown
  • Restores normal operation when the original capacitor has weakened
What's included: One 23.5 µF run capacitor Install notes:
  • Disconnect power before servicing; discharge the old capacitor safely
  • Note wire locations and transfer leads to the new capacitor one-by-one
  • Mount securely in the original bracket or location to prevent vibration
  • If the motor still won't start, further diagnosis of the motor or start device may be required

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Questions & Answers

For Whirlpool Run Capacitor (23.5 Μf) (Part Number: OEM18059322)

1 Answer

Elio, The capacitor would not cause the unit to not operate and will want to test to make sure that there is 120 vac going into the control board. Also check to make sure that the ribbon harness is seated properly.

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1 Answer

Hello Asberry. No, it is not likely. It sounds like the control board is bad and will need to be replaced on the unit.

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1 Answer

Todd, With what has already been done with the unit, the capacitor would be the most likely cause for the unit not running but could also be a control board that is sending mixed signals to the motor.

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1 Answer

Hello Ben, The capacitor will give a strange reading with an ohm meter if it is good. If you do not have a capacitor tester and an ohm meter is used, it will read a resistance reading that will go up very quickly to infinity. When the leads are reversed, the same thing will occur again. You need to check the voltage at the drain pump. If no voltage is present in a drain cycle, you will need to check the connections at the control and the harness. If no problems are located, the control will need to be replaced. If voltage is present, replace the drain pump. For more specific information, you will need to verify the model number from the units' I.D. tag and repost. This way we can pull the wiring information on the specific model you have in your home since the model number you listed is not coming up as valid. Thank you for your patience and understanding in this matter.

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1 Answer

Hello Kristen, This type of capacitor does not have to be connected by polarity. You can attach the wires on either terminal.

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1 Answer

David, You will want to put your meter for resistance or O reading. You will put your leads across the terminals and there should be resistance that drops to 0.00.

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1 Answer

John, There would not be a reset for the control panel but you will want to make sure that the keypad checks ok. If you access the tech sheet under the kickplate there will be a keychart that will show you how to test the keypad by doing a continuity test on the keypad.

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1 Answer

Raul, The capacitor is not polarity sensitive. The wires can be hooked up to either side.

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1 Answer

Hello Popcan. the capacitor should not buzz. You will need to replace the part on the unit.

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