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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

Hello Robert. I fhtere is no power coming from the control board to the heater during the drying cycle, you will need to replace the board in the unit.

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1 Answer

Hello Tony, My first guess would be that the installer didn't use a strain relief on the power supply wire to the unit and when you pulled it out, it probably pulled on the wire nuts. I would check the connection and then put the unit into the self diagnostic cycle. If there is an issue at this point, the diagnostics will point you in the right direction. The tech sheet will walk you through this. Initiation of the self-diagnostic procedure is: HI TEMP SCRUB, AIR DRY, HI TEMP SCRUB, AIR DRY Or SANI RINSE, AIR DRY, SANI RINSE, AIR DRY (Note: HI TEMP SCRUB = HI TEMP SCOUR) (Note: AIR DRY = NO HEAT DRY = ENERGY SAVER DRY) Let us know if we can assist you further.

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Thomas M. for Model Number KUDI01TJWH1

Well, this dishwasher has been very noisy lately, I thought maybe something was stuck in the grinder that wouldn't go away, then it seized up, It will fill and drain but when it comes time to wash I am getting the big "HUM" noise... something, a motor is not able to turn... Any thoughts, I have it out and on the workbench, looking at taking the motor off the bottom, have to start somewhere. I have the parts print out. Thank you for any input, I appreciate it. Thomas M.

1 Answer

Hello Thomas. The motor is locked up in the unit. When it does this, it is best to replace the sump assembly W10782773 and not just the motor. This way you have all new parts and are not at risk of a leak or the chopper being bad in the unit, and the filters are new as well.

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1 Answer

Tim, If you turn the upper rinse arm assembly by hand , is it free moving, it could be "stuck". The more lilely issue is there's not enough water in the tub, during the wash cycle. Try this , start the machine on a normal wash cycle, allow the unit to fill, start and run for at least 5 minutes, unlatch the door, wait a few seconds and open the door. The water level, if proper should be in contact with the bottom of the heating element (at least). If not, the system will not pressurize and the water will not flow properly and could create noises and impair the upper rinse arm operation. You'd need to replace the fill valve WP8531669 and check the float assembly WP8268913 for being "sticky" if that was the case.

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1 Answer

Hello Scott. It looks like the blue wire goes to the number 1 and the yellow wire goes to the number 2 on the capactior. Hope this helps.

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1 Answer

Hello Donald. The pump motor is not to hard to replace. You will need to check and see how much water is coming inside the dishwasher. If the water level is low, it can cause the problem your having. If so, you will need to replace the water valve WP8531669. Hope this helps.

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1 Answer

Hello USNavyChiefRet. If the digital meter can read the capacitor, then yes, you should see the "C-Kick". If it is good, then the motor may be bad. Check and make sure there is power coming to the motor. Hope this helps.

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Usnavychiefret for Model Number KUDR01TJBT0

I tested the inlet valve and it shows 115V and seems to be opening to let water into the tub, however, once full, the motor won't start, I just get a buzzing sound after a short period the unit shuts down. As I understand this capacitor starts the motor. I know a capacitor stores electrical energy. I've fixed this machine a number of times never had this problem, just replaced chopper. A few months ago the soap dispenser latch broke but that didn't seem to affect running. It sounds like it tries to start but nothing happens. I'm pretty good at troubleshooting if I knew what to look for, what specs to look for as far as electrical.

1 Answer

Hello USNavyChiefRet. With an analog meter you should see a "C-kick" and then a slow drop back to 0. If so, the capacitor is good. If not, you will need to replace the capacitor. Hope this helps.

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