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I have a LG washer WM0532HW that shows LE code. I have tried changing the hall sensor but did not work

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Hi Giancarlo:
The 'LE' error message indicates the control board has detected that the motor is either not turning, or has locked up for some reason. Monitoring the motor is the job of the hall effect sensor board which constantly determines the direction and speed of the motor and feeds that information back to the control board. If there is a problem between what the motor should be doing and what the hall effect sensor says the motor is doing, the 'LE' will be displayed and the cycle will be stopped.

Motor lock can be caused by several things from a loose connector, to a bad motor, or even the hall effect sensor failing or dislodging from it's mount. Any one or more of these components could have caused this error, but it is possible to separate the working from the non-working, just by following a process. The reason this particular unit has been on the injured list for so long is the first tech never followed a trouble shooting process to ensure the parts being replaced had actually failed.

I have a LG washer WM0532HW that shows LE code. I - 2_7_2012_1_48_54_pm.jpg

Fig. 01: LG front load motor circuit

It sounds like there is a problem with the hall effect sensor board as it sounds like you have replaced the rest of the components. Get to the main board, look for the hall sensor connector which should be a white connector with white, blue, red, and gray wires. Use a multimeter to measure between the white and gray with power on. You should read 10-15vdc, if not the board is bad. Then measure between the blue and gray wires while slowly rotating the motor. You should see a pulsing 10vdc and the same thing if you measure betwen red and gray. If you don't measure anything, then the wiring needs to be checked for an open circuit. If you measure less than 10vdc, or the voltage does not pulse as you rotate the motor, the sensor board is bad. You can also verify the wiring to the motor by measuring between any two wires on the red motor connector with blue, red, and yellow wires. You should read between 5 and 15 ohms between any two wires. If you measure an open circuit on any of them, then time to check the wiring harness for a broken wire, or a loose connection on either end.

The part number for the Hall Sensor is 6501KW2002A and it is the most likely cause of your problem. To search this and other replacement parts, visit this link appliancepartspros.com (with diagrams).
Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Posted on Feb 07, 2012

  • 2 more comments 
  • Giancarlo Zanolini Feb 07, 2012

    Thanks for your reply. Let me give you some feedback.Hall sensor connector reads 11.42 Vdc Wm-Gy, thus board OK;Measuring Vdc Bl-Gy reads 4-6 Vdc while turning and 10 Vdc when stopped ( readings are a bit non consistent between tries); Same readings between Rd-Gy.I am a bit confused because I can read 10 Vdc when I stop turning, but only 4-6 Vdc while turning. Text reads "the sensor board is bad", which one the hall sensor board? I just bought a new one and replaced it ! By the way I checked the motor wiring and it came back perfect 8-9 ohms every time. Thanks for your attention, Giancarlo

  • ZJ Limited
    ZJ Limited Feb 07, 2012

    Hi again GIancarlo:
    LE is a very bad error unfortunately. It means that your motor communication is being lost. LE means that your RPS or "hall sensor" thinks that your tub is not moving properly. Generally this results in needing the sensor itself replaced. If you wanted to manually drain out your washer, there is a small access panel at the bottom of your front panel. Open the access panel and there is a 3" diameter plastic drain cap you can unscrew and all the water will come out that's in the tub. Make sure you have a wet vac or something to collect all the water if you start to turn the drain cap plug.

    Generally on these LG washers it means that you need to replace the motor sensor. You will have to take the back panel off so that you can access the motor, remove the pulley and take the motor off, there is a little plastic sensor that clips onto the edge of the motor. The sensor is not sold seperately from the motor so you will have to replace the motor unfortunately. Here is a link to the motor you need:http://www.repairclinic.com/PartDetail/D...

    If you already replaced your RPS sensor and you still have the LE error coming up, open the door and spin the tub to make sure it spins smoothly. If so, then unfortunately the motor itself will need to be replaced.

  • Giancarlo Zanolini Feb 07, 2012

    ZJ, I am a little confused. The sensor you mentioned and emailed me the link IS SOLD separately, I understand that little white plastic part that clips onto the motor is the hall sensor I just replaced. Further as per your instructions the resistance of the motor checks within specs. So, if I have a brand new hall sensor and a motor that meets ohms readings, why buy a new set of those? Please make sure I was clear before I spend an extra $120.00

  • ZJ Limited
    ZJ Limited Feb 07, 2012

    If all parts and components are in accordance with the specifications, there would need to change. The wire harness has nothing close to it so it wasn't due to rubbing anything. I am guessing damaged during production or installation and it finally became the weak link in the harness. The harness is easy to get to once the rear panel is removed and it is actually a short section of wire that connects to the main harness at the bottom of the washer and then runs up to the motor itself. I am not aware of the harness being a common problem, but the LE error has been causing problems for LG for awhile. The problem has been more with a wire in one of the motor windings going bad than an individual wire harness.

    Its possible that the sensor board is not reading correctly and if you are seeing it on your meter and assuming the measurements are taken correctly, the control board will see the same anomaly and show an error. One last check to make on the board would be to measure resistance between blue and white, then between red and white at the control board connector while it is unplugged and the machine is off. You should measure 10K Ohm's.

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