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Customer Questions and Answers for Washer Drain Pump Assembly by Whirlpool

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By: Whirlpool
Part Number: OEM11860929
Manufacturer Part Number: 280187

Washer won't drain or shows F21 error code? The drain pump assembly removes water after wash cycles. DIY repair in 15 minutes with video instructions.

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Questions & Answers

For Whirlpool Washer Drain Pump Assembly (Part Number: OEM11860929)

1 Answer

Hello Nancy. Possible Causes / Procedure 1. Unplug washer or disconnect power. 2. Check wire harness connections to the MCU, the motor, and Central Control Unit (CCU). 3. Check the drive system for any worn or failed components. 4. Plug in washer or reconnect power. 5. Verify CCU operation by running a Diagnostic test or any cycle. 6. Check the MCU by looking for operations of the drive motor. 7. Check the drive motor for powered rotations. 8. Check that the serial harness at the MCU is not mounted upside down. The wires should be to the left when facing the MCU connectors.

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1 Answer

Hello G&J. If there is water to the pump, but none coming out, and the hoses are not clogged, you will need to order and replace the drain pump on the unit.

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Frieda C. for Model Number GHW9400PW4

My washing machine runs well at the beginning and in the middle of the cycle, it beeped and flashed the signal of F33. I have to cancel the cycle and drain all the water, then move to rinse and spin to continue. Then in the middle of it, it flashes F33 again. I then cancel again and drain the water. Then moving it to drain and spin, it will complete the cycle. I cleared out the filter but the problem still continues. Is it the pump that I need to replace?

1 Answer

Hello Frieda, The fault code F33 is explained on the tech sheet as follows: If after 30 seconds the control does not detect water entering machine, the valves will be turned off and the error code will be displayed. OR If the control has turned the water valves on and after 8 minutes the flow sensor has detected 10.5 gallons of water passing through it, but has not detected the pressure switch trip, the valves will be turned off and the error code will flash. Press PAUSE/CANCEL twice to clear the display. In light of this information I would make sure the water supply faucets are turned all the way on, the hoses are not kinked behind the unit, and no screens are stopped up from mineral deposits and/or sedimentation from the water supply. If these are all good, I would replace the water inlet valve WP8182862.

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1 Answer

Ashley, The F21 error code is an indication of a drain problem ( F21 = Long Drain) the drain pump 280187 is the more common issue. But first check and make sure the drain hose from the drain pipe to the back of the washer isn't kinked or clogged, first.

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1 Answer

Hello Confused. If the washer is shutting down and you have to restart it, it sounds like the CCU WPW10420115 is bad and will need to be replaced.

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1 Answer

Kathy, With the unit draining when you hit the cancel button 2 times would indicate that there is a internal malfunction of the main control board.

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1 Answer

Hello Jay. You need to check the pressure switch and see if it is causing the error. If you unplug it and the pump stops, it is bad and will need to be replaced.

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J.S.

We are getting the F02 code that indicates a problem with draining. We've checked the drain hose, the little trap that runs between the drum and the pump, and we checked the little tube that connects to the pressure sensor, we are finding no obstructions. We also are feeling water pressure in the hose as the water exits the machine. It seems that water is draining out of the machine, but we are still getting the error message and water never fully empties from the machine. Before we order a pump, is there anything else we can do? This is a whirlpool duet front loader about 7 years old.

1 Answer

Hello J.S. No, if the hoses are clear, you will need to replace the pump on the unit.

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1 Answer

Hello KKG. If this failure is displayed, there is any malfunction of the steamer component detected by the Steamer Electronic Board. Possible Causes/Procedure Check if pressure hose is ?xed correctly. Check if the air trap is not blocked. Check if the hose is not blocked.

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