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Locked Motor (LE code) problem with LG washer

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The direct drive motor is locking upand making a squealing sound as if the forward and reverse coils are energizing

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Old 06-20-2010, 08:48 AM
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Default Locked Motor (LE code) problem with LG washer
Model Number: WM1814CW TROMM   Brand: -other-   Age: 1 - 5 years   

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The direct drive motor is locking upand making a squealing sound as if the forward and reverse coils are energizing simultaneously. I had a repair tech test the commutator and the wiring harness - all were OK. The tests suggested the problem was in the main power board. But replacing it did not help.

The first time this happened I unplugged the machine so the process could reset. This solved the problem. But now the motor locks up at the start of the cycle and trips an LE error. The repair tech has never encountered a problem like this before. Any suggestions would be appreciated.u


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  #2 (permalink)  
Old 06-22-2010, 01:07 PM
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Boy I wish we could help you but the LE error on LG's is exhibit 1 on the problem with electronic controls with front loaders. It seems even LG does not know how to fix these things many times.

The hall sensor is one place to look, and the motor itself and surprisingly enough the door lock switch is another place that might be the problem along with all the wiring between all the components.

How do you determine where the problem is? Do what the pro's do, keep changing out parts until it is fixed. Is this a rediculous way to repair a washer? Yes it is. Is it your fault? No. Is it LG's fault? Yes it is. What do the letters LG stand for? Lottas Goshdarn luck in fixing it.
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Old 06-23-2010, 11:07 AM
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A few years back I was a darn good troubleshooter in telecommunications. So it is reassuring to know that others are stumped including LG. The LG repair manual says that if the motor makes any noise replace the rotor. LG gave me the name of one of their certified technicians. I called the gug. He was very helpful as well as smart. He said that 99% of the time it is not the main power board. I meant guy not gug. There is a glitch in this reply field. He also said replace the stator (I meant stator further back) and also order ther rotor. A good clue is that LG has stator in stock but rotors are special order. This suggests that the problem is the stator. I will let you know what happens.
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Old 06-23-2010, 11:24 AM
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Ok good, let us know what happens because this is a very difficult issue and the more info we can post on it the better.

Thanks
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Old 07-15-2010, 08:08 AM
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I replaced the stator and it not only fixed the problem the machine is running better than it ever has even since it was new (it is about 5 years old). On the LG tech's advice I ordered both the stator and the rotor from the parts supplier and installed the stator first without opening the box for the rotor. Since the stator has windings it is far more likely to be defective than the rotor which just has magnets. If the motor is making noise then it is energized. So this tends to rule pout problems like the hall sensor. The LG service manual advises stator replacement if the motor makes any noise. So even if it seems to test OK (mine did) the stator should still be replaced. I suspect that the stator was defective right from the get go because the motor is not only far quieter since the stator was replaced it seems to spin a lot faster than it did before the repair.
Sorry for the delay in posting this. I fixed the machine days ago but have not had time to get back to this forum.
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Old 07-15-2010, 01:22 PM
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Well really glad that worked and it is very beneficial to have that info. The stator is definitely one of the most likely suspects, but a lot of people have had problems with the wiring on these.

Thanks for the update. good luck going forward.
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