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Customer Questions and Answers for Rotor Position Sensor by Whirlpool

4.89 (64)
By: Whirlpool
Part Number: OEM18049140
Manufacturer Part Number: WPW10178988

The Rotor Position Sensor is an OEM part for Whirlpool washing machines. It is responsible for monitoring the position and speed of the rotor, ensuring the motor operates correctly to perform various washing cycles. The sensor sends precise data to the washing machine's control board, which adjusts the motor's function accordingly.

Causes of a bad rotor position sensor can include electrical failures, wear and tear over time, or physical damage from impact or moisture exposure. When this sensor fails, it disrupts the communication between the motor and control board, leading to operational issues.

Symptoms of a bad rotor position sensor include:

  • The washing machine not spinning or agitating
  • Error codes indicating motor issues
  • The machine stopping mid-cycle
  • Unusual noises coming from the motor area

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 Rotor Position Sensor (Part Number: OEM18049140)

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Cal for Model Number WTW8900BC0

Hello, I have a whirlpool cabrio platinum wtw8900bc0, and recently it stopped working when attempting to spin. After powering it OFF, I tried to manually spin the basket and impeller, and both would not budge. They used to be able to spin freely. After putting the washer in diagnostic mode, the error code F51 pops up. Putting it into the diagnostic tests (C0, C1, etc), everything seems to be fine (rinse, drain) except for the SPIN. It simply doesn't spin at all, and the basket and impeller appear "stuck". One final test I did was to put it into a RINSE/SPIN cycle (which started at 25min) with no clothing/detergent, and it never finished the cycle due to it's inability to spin. Again, RINSE, DRAIN all worked, but not SPIN. Eventually, it popped an "SD" suds detection error, restarted the RINSE, drain, etc. I eventually cancelled/turned off the machine after 45minutes, put it into diagnostic mode, and again F51 popped up. I took the basket out, checked the plastic couplers that attach the impeller to the stem, and all seemed fine. (No clothing impeding the basket, stem, etc. and no "play" on the washers.). Does this mean I need a new RPS sensor?

Answer

Cal, Tilt the unit back and access the rotor and stator, check to make sure that there is nothing impeding them and that the RPS sensor is in the correct position and not loose. If this checks ok but the tub will not spin freely then it sounds as though the bearings on the unit have seized up. The bearing part number will be W10435302.

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Answered by AppliancePartsPros.com   |   Wednesday, March 4, 2020

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