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Customer Questions and Answers for Run Capacitor by Whirlpool

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Manufacturer Part

Run Capacitor

4.89 (64)

By: Whirlpool

Part Number: OEM18071040

Manufacturer Part Number: WPW10662129

The Run Capacitor is an OEM part for Whirlpool appliances, designed to provide the necessary electrical charge to start and run the compressor motor. This part attaches to the compressor to aids in maintaining a consistent motor speed and ensuring smooth operation. The run capacitor plays a crucial role in the appliance's electrical system, storing and releasing energy as needed to power the motor.

Causes of a bad Run Capacitor include electrical surges, wear and tear over time, or overheating, which can lead to a failure in providing the necessary start-up energy or maintaining motor speed.

Symptoms of a bad Run Capacitor include:

The appliance does not start.
The motor shuts off shortly after starting.
The appliance is humming but not running.
Increased energy consumption.

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

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Questions & Answers

For Whirlpool Run Capacitor (Part Number: OEM18071040)

Curtis April 09, 2025 for Model Number WRF560SMHZ00

My whirlpool fridge will not work at all. I am plugged into a powered outlet nothing comes on in the unit not even the lights. Where do I start looking? Thanks for your help.

1 Answer

Curtis, as the lights operate independently of the rest of the system, it would be recommended that the voltage is double-checked at the power cord or that the refrigerator is plugged into a different outlet. If the power cord does not have 120 VAC at the plastic connector, or if a different outlet is used that something else (like a mixer) did work in, the failure would likely be in the power cord W10637509 itself.

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Forest August 21, 2024 for Model Number MRT711SMFZ02

my 14 month old freezer top cools fine. lately the compressor has been been intermittently buzzuing/humming for 2 seconds every now and then. not sure if during start up. would maytag replace compressor? I think it has 2 year warranty on it.

1 Answer

Forest, In most cases it is not the compressor that is faulty but the start device. If the compressor is faulty then you would want to contact Maytag to determine the warranty on the compressor.

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Bridget March 04, 2024 for Model Number WRT112CZJW00

My Whirlpool refrigerator (top freezer) stopped cooling after a power outage. From what I can tell (after watching some YouTube videos), the problem is most likely the compressor start relay and/or capacitor. Does this part work with my model: WRT112CZJW00? It's only 2 years old but I'm having trouble finding any references to it anywhere other than the store I originally bought it from.

1 Answer

Bridget, The part number for the start device on your refrigerator will be W11643623.

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William November 23, 2023 for Model Number mfi2569yeb0

Hi. My Maytag refrigerator cycles on and off for long periods of time The front door controls will blink on and off as well. I have had a couple of power surges as well. The compressor is still cooling. But for how long? I have only tried unplugging the unit and made no difference really. This has been going on for a month now. Why the shutting down And still cool? ...Thanks

1 Answer

William, Using the tech sheet supplied with the refrigerator, place it into service test mode and run the diagnostics to see what error you can find.

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Raymond March 21, 2023 for Model Number 59669933011

My kenmore fridge works fine most of the time, but sometimes it does not cycle on and off. It occasionally stays on all the time, causing the freezer section to get too cold. If I unplug the fridge for a while and then plug it back in, it works for a week or so and then happens again. Any thoughts as to which part may need replacing??? Thanks in advance.

1 Answer

Raymond, Since this occurs at random it is likely a faulty control WPW10503278. Just make sure that there are not any other underlying issues. I could see a sneaky defrost issue being there. Check out this video for additional troubleshooting: https://youtu.be/IXByJPBpSus

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Shaun March 13, 2023 for Model Number BW20K

Hi the capacitor does not seem to have 2 holes on it for the pins that are on the compressor i am worried that it may not work with out fridge. PLEASE HELP!

1 Answer

Shaun, the run capacitor WPW10662129 would be installed off of the compressor and should have two wires going to it. However, the overload and relay assembly 61003103 (part has been discontinued by the manufacturer) would be installed directly onto the compressor.

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Mike September 22, 2022 for Model Number C70DW

Hello. My freezer has been sitting in the heated garage for a couple of years unplugged. I plugged it in and I hear the humm of the freezer but no cooling or freezing is happening. Any ideas? Thank you.

1 Answer

Mike, if the fan and compressor are running but there is not a frost pattern on the evaporator, there is a sealed system failure that would require an EPA-certified technician to diagnose and repair it.

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Rohan July 27, 2022 for Model Number EH151FXMQ00

This is a Whirlpool chest freezer . The bottom of the freezer seems to be warmer than the top so items on the bottom are not freezing. The items on top are frozen. It’s not overloaded and there is a small band or frost that always been there around the top of the chest freezer. The compressor is on. This is baffling to me and I have no idea what is wrong with it as it seems to be functioning somewhat. Your help is appreciated!

1 Answer

You have a sealed system issue and need a tech or a new freezer.

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Bethany June 07, 2022 for Model Number GS6NBEXRS02

I'm looking for a replacement start relay and capacitor. Also I am having trouble finding a match. Below are the numbers written on the parts I currently have: Capacitor: JSU21X126AQB VAC 1uF 70 C 10 000 AFC 50/60Hz 2169373 Relay: 5SP14N437NFM 2304885 10 H07R Do you have any advise on what would be compatable? Thank you in advance

1 Answer

Bethany, The start device will be part number WP2304885 and the capacitor will be part number WPW10662129.

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Louis October 14, 2021 for Model Number Ev150nxwn03

If the defrost heater is bad will the defrost timer still cycle. That is will it still cut off compressor for 30 minutes, restart and run 10 hours if the thermostat requires and then go into defrost again , etc? My defrost heater is Caput by all tests but I am not sure about the timer. Thanks for any help.

1 Answer

Louis, the defrost timer W10822278 would still operate as designed if the defrost heater 1100434 (part has been discontinued by the manufacturer) has failed.

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