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Black Particles on Dishes after Cycle

I have an LG LDS5811ST, and it has a stainless steal tub which is pristine, but the plastic rack and spray arm assemblies get covered in a blackish film. I have cleaned it multiple times, but can't get inside the spray assemblies, and the film comes back after a short period of time. I have read that this unit doesn't require filters or a filter cleaning, so I assume it must be my water supply. Has anyone had this problem and have any recommendations?

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This is caused by the enzymes in the dishwasher powder and the limescale in the water turn the salt switch to its highest this is normally just under the salt filler cap,and run the machine on a pans program with nothing in only a good dw cleaner

Posted on Jun 15, 2009

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Posted on Jan 02, 2017

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1 Answer

The dishwasher is not washing the dishes on the top rack.


Check that the arm outlet jets at the trailing end of the arms are not blocked with food particles and other solid matter. This often happens and the arm is unable to turn because the water jet that is supposed to drive the arm does not have the force to rotate it with the result is that the upper dishes do not get enough water and chemicals. It may also cause water to continue dripping onto dried dishes after the the drying cycle has stopped.

Apr 05, 2011 | KitchenAid 24 in. KUDI01FLSS Stainless...

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Hi I have a Blanco dishwasher BFDw8 which is having poor wash results in the top tray I have tried all the trouble shooting things in manual. Investigated further by opening door during wash cycle several...


  1. Check the water temperature. Should be 125 to 140 F.
  2. Check pump re-circulation., Listen, see if it sounds like it is spraying the water around with enough pressure.
  3. Check water level when the fill cycle has completed. Should be just under the heating element. If not, possibly need to replace the water inlet valve.
  4. Check the spray arm and pump cover for splits or leaks.
  5. Check to make sure dishwasher is draining after each cycle. There should only be a little water in the bottom of the tub.
  6. Make sure the dishes are loaded properly, or dishwasher is not overloaded.
  7. Possibly try a different detergent. Some liquid-gels will bubble and a pump cannot pump bubbles.
Scrape away large pieces of food, bones, pits, toothpicks, etc. Burned on food should be loosened before loading. Empty liquids from glasses and cups. Foods such as mustard, mayonnaise, vinegar, lemon juice and tomato products may cause discoloration of stainless steel and plastics if allowed to sit for a long period of time. Unless the dishwasher is to be operated at once, it is best to rinse off these food soils. Load racks so that large items do not prevent the detergent dispenser from opening. If the dishwasher drains into a food disposer, be sure disposer is completely empty before starting the dishwasher.
just click on the above questions for more help the answer will come to the screen
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Oct 05, 2008 | Dishwashers

1 Answer

Top rack of dishes are not getting clean. Dried food particles are all over inside and outside of dishes and glassware. I have used 2 bottles of dishwasher magic through the machine and it has helped very...


Hi,


I have an older dishwasher also and recently my wife also complained about it not cleaning right... so me being the man I am tried in vain to clean the things... Bought new spray arms online and installed them in minutes...now the thing works like new... However I have also found that if the heating element goes bad then that also can mess things up bad... So I would buy new spray arms, and also check out the heating element to make sure it is working... Here is a tip that will help you with the online buying...


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Dec 09, 2010 | Frigidaire 24" Tall Tub Built-In...

1 Answer

Food gets stuck on dishes especially in the top rack.


There is a waste filter in the bottom under the lower spray arm that needs to be cleaned periodically. If you are not cleaning it, it may be redepositing food particles on your dishes.
remove and clean the filter, and see if that helps.

Nov 21, 2010 | Bosch 24 in. SHU66C05 Stainless Steel...

1 Answer

LEFTOVERS ARE STILL BEING LEFT AFTER THE CYCLE IS DONE. I RINSE DISHES BEFORE HAND BUT THERE IS A BLACK DISCHARGE ON THE BOTTOM OF THE TUB, AND SOAP STILL LEFT IN DISPENSER.


clean detergent dispenser drain hose could be kinked,check pump it could be dirty,is the water hot enough and is the detergent new?to remove spray arm un screw spray tower also clean out spray arm there may be food particles in arm as well as tower,try this out try washing unit with out dishes sometime vinegar or c.l.r will take care of problem but let it soak and don't add detergent.thanks

Dec 01, 2009 | Kenmore 24 in. 16362 / 16364 / 16369...

1 Answer

KitchenAid Dishwasher (model KUDS01IJBL) has black gunk inside


That black gunk is caused by soap deposits and food particles that do not get washed down the drain. This all collects in the area around the door gasket and front of the wash tub and forms a sticky black sludge. You need to periodically clean the interior of the dishwasher out with a non-abrasive cleaner with some bleach in it to kill bacteria. You should also check the wash pump sump (located under the lower spray arm) to make sure it is not being clogged with food and debris. In order to access the pump sump, you will need to perform the following:

1. Remove the lower wash rack and lower spray arm.

2. Remove the upper wash rack and spray arm.

3. Locate the screws holding in the upper spray feed tube. Remove the screws to the feed tube and turn the whole assembly 1/4 turn to the right (CW direction). The entire assembly will unlock from the wash pump assembly and lift out.

4. Remove the strainer assembly (known as an accumulator) that covers the pump sump area.

Inspect the sump area for food particles and debris that may be contributing to the mess inside the wash tub. If you need some guidance, pcappliancerepair.com has some very helpful exploded view diagrams to assist you.

If you have any questions, or require further assistance, please let me know. I hope this is helpful to you.

Aug 17, 2009 | Dishwashers

1 Answer

LG Dishwasher redepositing debris back onto dishes


Have had a problem with our LG 5811 Dishwasher not operating.
I have found the Vent Hole Cover located inside the Door was not installed correctly. I used plumber putty between the plastic fitting and the inside face of the Door and turned the Cover fully to lock in place (vent hole is toward Door bottom). Water was leaking previously from this opening over the wires in the door.

Another problem was the lower Door Seal (under the Door) it was not installed correctly either. It was actually too long and would not seal against the bottom of the inclosure. Water was coming out and spraying the wires in the door. I had to remove the metal stiffener over the front of the Dishwasher to get to the Door Seal. I removed one end and reinstalled the seal. The Seal laid flat but was approximately 3/16" to long. I cut off the end with a sharp knife - seems to be the correct length now.

May 23, 2009 | LG 24 in. LDS 5811ST Stainless Steel...

1 Answer

Washer arm not working


If your dishes are getting clean, then your problem is a "feture" not a failure. The LG LDS5811 has a Verio motor/check valve that switches between cleaning the upper dishes and then the lower. Depending on when you open the door, one arm will not be spinning.
All the presure is routed either to the lower or upper arm, so it really does help - especially with a water conserving model like the 5811.
Good Luck!

Mar 06, 2009 | LG 24 in. LDS 5811ST Stainless Steel...

1 Answer

Dishes not clean in bottom rack of Whirlpool Quiet Partner I (du1048xtps4)


check to make sure your lower spray arm openings are not blocked.

Nov 07, 2008 | Dishwashers

3 Answers

Top rack dishes have grainy particles on them after washing and will not come clean.


Run the dishwasher and observe the spray arm,if split it will spray water down: Also check water in tub, is it filling up sufficiently to get near the heater? If it has a upper spray arm does it spray water? If not you may have a clogged upper spray arm.

May 23, 2007 | GE 24 in. Profile PDW7800 Built-in...

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