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Customer Questions and Answers for Washer Drain Pump Assembly by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18019023
Manufacturer Part Number: WP22003059

Washer won't drain or spin properly? A failing drain pump assembly causes water retention and noisy operation. Moderate DIY repair in 1-2 hours.

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Questions & Answers

For Whirlpool Washer Drain Pump Assembly (Part Number: OEM18019023)

1 Answer

Marc, It's not necessary, The drain pump motor is a 120 VAC motor and doesn't need to be "polarized". As long as you have the black wire (L1 voltage)on one terminal, and the white wires9N out of the motor) attached to the other terminal, you'll be fine.

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1 Answer

Hello Shelvy, This sounds like you have debris in the sump area preventing the unit from draining properly. The pump could also be failing. Most commonly, if water isn't draining completely, the issue is a clog in the drain line o a failed drain pump. Does the door lock light come on that is on the control panel? If not, you need to open the control panel and look in the center of the board for the R-11 resistor. If it is burned, replace the door lock wax motor and the machine control board. If not, you need to get the wiring diagram and your test meter out and shoot the out-of-balance circuit. Also, as per a manufacturer rework, if there is an out-of-balance switch on the left rear strut, it needs to be removed and bypassed. If you would like some illustrated instructions on the troubleshooting of the wiring harness in this unit, you can re-post with an e-mail address and we can send it to you.

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1 Answer

Robert, the drain pump assembly will need to be replaced if the housing has a leak. Thanks!

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Preecha K for Model Number mah4000aww

The washer won't drain. I cleaned the drain host and pump. I tested the pump motor by connecting the two poles to a power source. It spins well. I put the pump back into the washer and started a wash cycle. At the draining time, I could feel the pump motor vibrating and spinning but there was no movement of water out of the drain host. I am sure the drainage is not clogged. I can manually drain the tub by lowering the drain host to floor level.

1 Answer

Preecha, Based on your post description, the issue would be in the drain impeller and or motor shaft. You'll need to replace the drain pump WP22003059 The motor is running, but the shaft or impeller is not turning. Thanks

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1 Answer

Hello Bill, I have actually never seen a screen in a Neptune washer to protect the pump. The only screen I know of in a stacked unit is the lint screen in the dryer.

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1 Answer

Robert, are you sure the washer is spinning at all ? The place to start, with a complaint like yours are the off balnace switch circuit and the spin enable switch on the door latch assembly. If you have a broken wire or inoperable off balance switch, the tub will starty to spin , stop and rock back and forth, to redistribute the load. If the spin enable switch does not have a closed circuit, once the door has closed and locked, it will not spin at all. You can test the off balance and spin enable switch circuits up at the washer main control board, located in the front right corner of the dryer cabinet, or at the multiplugs located on the sides of the tub assembly located under the front top trim panel on the washer with a multimeter. Thanks and Good Luck

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1 Answer

Hello Mark. Open the door and remove the 4 screws on the inside edges of the front panel. Then, you can remove the door and the front panel off the unit. Now you can access and clean out the pump assembly WP22003059. Hope this helps.

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Daniel for Model Number MAH3000AWW

My drain pump has 2 separate blue electrical connectors on it; they are located on the edges of the black motor housing. One has 2 white wires & the other has a single black wire. The picture of the pump on your site shows 1 electrical connector in the middle of the black motor housing. How can I use your part? Also what is the pump isolator bracket AP4033617? It is listed as being part of # 5 in the exploded view but I don’t see it in my washer?

1 Answer

Daniel, The pump isolation bracket is mounted to the base of the washer, then the pump, can mount to it. It is basically a "cushion" to disipate or eliminate the noise transfer from the pump to the base. If you have the original foam pad, it will work just as well. As for the wiring connections, They will fit, side by side in the new connector. The two white wires are attached together, inside the plastic connector cover and will not create a problem. Good Luck and Thanks

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