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Customer Questions and Answers for Run Capacitor by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18030570
Manufacturer Part Number: WP65889-4

The Run Capacitor is an OEM part for Whirlpool refrigerators. It is responsible for helping the compressor motor start and run efficiently by providing an extra electrical boost. This component ensures that the refrigerator operates smoothly and maintains the correct temperature by stabilizing the compressor's performance.

Causes of a bad run capacitor can include electrical surges, age-related wear, or overheating. When the capacitor fails, the compressor may struggle to start or run continuously, leading to inefficient cooling or a non-functional refrigerator.

Symptoms of a bad run capacitor include:

  • The refrigerator not cooling properly
  • The compressor not starting or running intermittently
  • Unusual clicking noises from the refrigerator

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

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Questions & Answers

For Whirlpool Run Capacitor (Part Number: OEM18030570)

Selav for Model Number Amana BB20V1PS P1321315WS

First noticed that ice maker stopped working, then realized that actually freezer wasn’t working in general. No ice buildup anywhere. Fridge section still seems ok. We turned freezer temp control to off, let it fully warm up, then turned it back on to coldest setting and left it overnight. Fan is on at back and blows cool air but freezer never got down to freezing temperature. We have multimeter and electronics test experience but no fridge repair knowledge. Suggestions for how to investigate further would be great.

1 Answer

Selav, it would be recommended that the evaporator is inspected for a frost pattern. If there is not a light snow coating the entire evaporator after 40 minutes of compressor run time, the failure is in the sealed system and would require an EPA-certified technician to diagnose and repair the failure.

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1 Answer

Joette, check out this video for help with troubleshooting: https://youtu.be/OPVZeKvxjEI

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1 Answer

Hello John, without a model number, we are limited to some general checks. In normal run mode the evaporator fan, condenser fan, and compressor should be running. If you have a multimeter you can check for 120v starting at the compressor and condenser fan terminals. If they are all running that would indicate a sealed system leak. Also, your model came with a technical testing sheet, it is located under the top right side door hinge cover or under /behind the lower front grill, you can use it to run tests on the components from the control panel.

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1 Answer

Don, if you can remove the ice bucket and the auger motor will turn normal, you would have a problem with the ice bucket. make sure nothing is blocking the cutting teeth in the front of the bucket. The part number for the bucket would be, WP12740302

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1 Answer

Lawrence, It is not necessary to replace the capacitor when you replace the relay as the capacitor on a refrigerator will rarely fail.

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2 Answers

Gilbert, The most likely cause for this issue will be either there being a defrost issue which you will want to check the evaporator coils to make sure that the coils are not impacted with ice. If there is a good frost pattern then this would likely be a faulty damper WP67003903.

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2 Answers

Gilbert, if the "freezer works fine" then the compressor is running and the run capacitor is working. Since you have to defrost the unit, you'll need to check to see if there's and issue with the defrost components or check to see that the auto damper opens and closes when needed. If you remove the front kickplate, and look inside above the condenser coil, you should find the tech data sheet in a plastic envelope, retrieve the information and conduct the service mode test and check all the components for operation. If the tech information has been removed, repost your question and include an e mail address so we can supply the information to you. Thanks,

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1 Answer

Jose, It is not uncommon for the unit to make a humming noise when the compressor turns on and last a short period while the refrigerant starts to flow through it.

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1 Answer

Hello John. If only half of the evaporator is working and the other half is not working, you will need an HVAC tech to come out and service the sealed system on the unit.

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