Question about LG 24 in. LDF 7811 Built-in Dishwasher

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My Lg Diswasher is making a dry whinning noise all the way through while motor is running How can i tell if its the motor or the impeller Kim

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Hi . The LG motor has 2 bearings of LOW Korean quality in the motor. The 2 can be replaced by SKF 608 bearings and once the motor is out can be done for just a few bucks. I have just opened 2 motors and in both cases it's the front bearing to the impeller that makes this grinding noise.

Posted on May 11, 2013

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The problem is indeed in the wash motor bearing.
unfortunately most motors come with complete with impeller.

You didnt mention model number so unfortunately i cannot give you a re[placement cost.

Regards
aardvark Repairs
aardvark.repairs@btinternet.com

Posted on Nov 17, 2009

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Posted on Jan 02, 2017

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WHY DISHWASHER MAKES A WHINNING NOISE


If the dishwasher is making a loud whining noise, the drain pump or motor bearings are defective, the drain impeller or wash impeller might have worn out. All these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.

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I have a LG diawsher, model # LDS5811ST that is


Display Condition LE = Motor Error

Possible Cause For Error Occurrence:

Wiring connection is OK?
The Impeller of Washing Pump is
locked.
The rotor of Washing Motor is
locked.
The Blade is locked.


Remedy:

Check the wiring connection.
Replace the cause of restriction.
Replace the Washing Motor.
Replace the PCB.

LE means locked motor disassemble the filter and work your way down to the macerator(steel chopper blade) remove it and see if the side labeled "this side up" is really up, its in english... dont think the chinese labourers paid attention to the warning cause i have seen alot that were wrong way
You also should remove the door panel and check for a broken wire (usually the blue one)

If all the wiring checks out - it is most likely a broken or locked up impeller.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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1 Answer

I have an LG Diswasher LDS5811BB Bought in 2006


LE is a motor error The Motor is working abnormally.
Wiring connection is OK? The Impeller of Washing Pump is locked. The rotor of Washing Motor is locked. The Blade is locked.
Check the wiring connection. Replace the cause of restriction. Replace the Washing Motor. Replace the PCB.

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1 Answer

My LG makes noise during operation.


The only way to access the motor either the drain motor or the wash motor is to pull the diswasher out, invert the whole thing, remove the access pannels. If you are going to remove the entire sump assembly, be real careful as you remove the screws, because the law of gravity promises to crash the sump down onto the "top" of the diswasher.
The Parts waranty is 24 months. But with the motor being repaired by an (factory authorized?) you may be able to get LG to cough one up.
Look carefully at the failed motor, write down the horse power and amps spec. Compare it to the new one. You should see a higher horsepower version. Good Luck.
Also, if you have _ever_ had problems with water leaking from the front door or the dishes dry poorly, get back to me with your model and serial number. Could have some good news for you.

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Make sure you check the drain filter for any loose coins or articles that may have been trapped and hitting against the drain pump impeller. If it is clear then the motor is indeed bad. Hope this helps, please rate my solution.

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I am having a same problem. You can open dishwasher sump assembly from inside the dishwasher and check if something is blocking white impeller. I tried to open impeller and sheared screw head as I did't realized it is left handed screw. Even after cleaning impeller you still get problem, you need to check from bottom and see if something is stuck there. If all right and you are still getting error then it is time to replace motor. In my case I ordered entire sump assembly as my seals were also wornout. Sump assy cost $113 on Sears part direct.

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4 Answers

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It could be the impeller on the motor. The impeller fits over the shaft of the motor and might have split/broken up. That funny noise is probably the shaft spinning inside the damage impeller. Fortunately the impeler is fairly inexpensive and easy to replace. I believe there are one or two parts/covers to remove that are held in by a roughly half dozen torx screws.

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