Question about LG 24 in. LDS 5811ST Stainless Steel Built-in Dishwasher

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LG LDS5811WW Low pressure out of spray arms

Dishes are not getting clean. Low water pressure coming out of spray arms. Arms do not rotate. Water spray out of lower arm holes is about 4 to 5 inches high with no rotation. Screens clean. Nothing in impeller. All arm holes clear. Water pump turns by hand. Water drips from nut that holds upper arm in place. No water spray from upper arm. Upper arm does not rotate. Noise that sounds like something draging on impeller for a few seconds, then goes away. Happens three or four times at start of each wash cycle. Sound like something starts to rotate, then stops. Whats wrong? Thanks for your time and help!
John

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On the LG LDF xxxx dishwasher family, the Vario feature uses a motor/check valve to switch between "full power" cleaning from _either_ the lower or the upper spray arms, never at the same time. So, not seeing the upper arm spin during the lower arm spinning is standard operating procedure.

But back to your problem. Step one would be to remove the filter assembly again and make certain that there is nothing (debris, broken glass) blocking the white areas where the check valve rotates to switch between upper/lower spray arms. A blockage there ~could~ cause impotent spraying/cleaning.

If there is no blockage and the impeller remains in good shape, suspect a failing wash pump motor. Try to isolate the noise to that motor.

Watch for error codes on the display and report back what you find, OK?

Good Luck!

Posted on May 14, 2009

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I would start with watching the operations of the dishwasher if you can before trying my fix. start with a few sandwich bags and flashlights. I had a small video camera to record the operations of the dishwater so I know whats wrong. My upper arm didn't spin as it had little water coming out causing my dishes to be dirty.
This is a easy fix for any dishwasher with this problem. Remove all the screws on the lower pump assembly. underneath you will see two white wheels. The taller white wheel is what changes the water flow. I believe it only turns one direction so rotate this until the closed part is against the wall thus opening both ports. This wheel is what controls the water flow for both lower and upper sprayers. Reassemble the cover carefully with the gasket in place.
This job is really easy to do so just take your time.
Moving forward I wouldnt use the half load option on your dishwasher as this might cause this problem again.
Hope this helps fix your dishwasher.

Posted on Oct 11, 2011

  • mtagauto
    mtagauto Jul 10, 2012

    Same problem with mine, just had very low flow. Did as above, removed tray, removed strainers, pulled upper grey plastic pipe out that sends water to the top level. Removed the 4 screws on the plastic cover at the base of the machine. Found a little white cover and removed the screws there. Inside I found a cup style thing that looked like it was actualy blocking the centre inlet pipe. Spun it 180 degrees, put it all back together and hey, I don't need to do the dishes anymore.

    Thanks heaps.

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Why is the spray arm in my frigidaire dishwasher not raising all the way and dishes on the top rack are not getting clean?


Good Afternoon Stephanie,

I understand the spray arm is not raising all the way in your Frigidaire dishwasher, model# FDB750RCC. I also see that the dishes on the top rack are not getting clean due to this. The spray arms are stationary where they are attached to, other than turning due to water pressure. Please try the following solutions:

• Choose another cycle for longer washing time.
• Check rack loading section for proper loading-avoid nesting items.
• Home water pressure may be too low- should be 20 to 120 pounds per square inch (psi).
• Check incoming water temperature. It should be at least 120 degrees F.
• Select HI-TEMP WASH option.
• Check water hardness. For extremely hard water, it may be necessary to install a water softener.
• Use fresh detergent.
• Check to make sure funnel in top rack is not blocked.
• Make sure items are not blocking the spray arms, preventing them from rotating.


I ask that you please follow up with a comment on the post, at your convenience, to advise if further troubleshooting is needed or if your appliances status has changed successfully. Hope this is helpful.

-Best Regards-
WP

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1 Answer

Spray arms not working


Hi frustrated in Raleigh,
I understand that the spray arms are not moving or spraying water, even after you have cleaned the screens and arms. What might be happening is you are not getting enough water pressure to the dishwasher.
The hot water line to your dishwasher must provide water pressure between 20 and 120 psi.
Low water pressure may occur when laundry or showers are in operation.
Wait until water use is reduced before starting dishwasher.
If you are still noticing that the spray arms are not moving or spraying water, I would have a local Authorized Technician come out to see what exactly is going on with the spray arms of your dishwasher.

-Best Regards-

Jan 06, 2014 | Frigidaire FPHD2491KF Dishwasher

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My dishes don't seem to be getting rinsed. They come out "gritty" and none of the food particles are being washed away.


Hi

If you are noticing that the dishes are not clean, then there are a few things to check for. Check the soap powder if it's kept in a dry environment. Also try replacing the powder with something like a gel or liquid. Next thing to check for is the water pressure and fill valve. Check if the water is filling in and the spray arms are throwing the water with enough pressure. Try and listen to the sound if you hear a proper spraying action sound.

If it seems as a low water pressure then check the fill valve. Now, check if dishwasher is draining the water or not. While the dishwasher is working check whether the dishwasher is draining and there is not much left out water after the cycle is complete. Try cleaning the spray arm with a soft brush. The water temperature plays a major role in cleaning of dishes. The temp should be between 125 and 150 F for dishwasher to clean the dishes. Hope this helps...

Daniel

Mar 26, 2011 | Whirlpool KUDC03FVSS Builtin Dishwasher

1 Answer

The dishes are coming out dirty. it sounds as if water is spraying but the dishes are not wet as usual and not clean.


Hi

If you are noticing that the dishes are not clean, then there are a few things to check for. Check the soap powder if it's kept in a dry environment. Also try replacing the powder with something like a gel or liquid. Next thing to check for is the water pressure and fill valve. Check if the water is filling in and the spray arms are throwing the water with enough pressure. Try and listen to the sound if you hear a proper spraying action sound.

If it seems as a low water pressure then check the fill valve. Now, check if dishwasher is draining the water or not. While the dishwasher is working check whether the dishwasher is draining and there is not much left out water after the cycle is complete. Try cleaning the spray arm with a soft brush. The water temperature plays a major role in cleaning of dishes. The temp should be between 125 and 150 F for dishwasher to clean the dishes. Hope this helps...

Feb 17, 2011 | Dishwashers

2 Answers

LG model LDS5811WW/02 has never cleaned the dishes since first installation. Put clean dishes in and they will come out dirty too! Have tried all dishwasher soap types and brands and drying agents. Always...


if the soap/detergent isn't completely rinsing out of dispenser, it sounds like water isn't directed the top spray-arm. possible a defective vario motor; as it directs water to the water channel that supplies water to the middle and upper spray arms.

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good day,
hope this link below will solve your problem.

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1 Answer

Will not clean dishes on the upper rack


Make sure you get water to the dishwasher. Check to see if the water shut-off valve (located under the sink) is open. If you get water to the dishwasher, but there is still no water inside during the fill cycle, the problem might be with a faulty water valve (located at the bottom of the dishwasher, behind the kick panel, on either side), in which case replace the water valve.

If there is not enough water, the dishes would not get cleaned. This could be caused by a partially closed water shut-off valve (located under the sink), or a faulty dishwasher water valve (located at the bottom of the dishwasher, behind the kick panel, on either side).

There is usually two, sometimes three spray arms in a dishwasher. Make sure there is no debris blocking the holes inside each spray arm.



Jun 16, 2009 | KitchenAid KUDR01TJ Dishwasher

1 Answer

Will not get dishes clean


If like you say the water pressure is good the water temp is good (120o minimum). The soap dispensor opens and nothing is blocking the arms from rotating then my guess is the unit is being overloaded. There needs to be space between the dishes so that the spray can hit the surface. Also, most folks know this but bears repeating... the dishes, cups, pots, etc. have to face down or angle toward the spray. I have seen people just throw dishes in facing up and then wonder why it doesnt get clean.

May 12, 2009 | Whirlpool 24 in. GU980SCG Built-in...

1 Answer

Not enough water pressure to move upper arms or clean dishes


Recommend you pull the bottom spray arm straight up, then out of the DW.
Remove 9 phillips screws that hold the filter shroud down. Remove the filter and clean/rinse it out.
While the filter it out, grab a flashlight and inspect all over the sump area. Especilly in the area the has the check valve that rotates (Vario motor-driven) to feed the water pressure either to the lower and then the upper arms. Watch out for broken glass! Also, inspect the impeller to see if it is undamaged and spins easily.
Reassemble, then test out.
If problems remain, the the wash pump motor is probably the culprit. Do you get any error messages on the time display?
Good Luck!

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1 Answer

My Bosch dishwasher model #SHU43C05UC/14 drains well and has enough water(I replaced the inlet water valve already),but not washing the dishes clean especially the top rack.What could be wrong?


open machine when running and check both spray arms rotating - you will get a bit of water out. if spray arms not rotating, usual cause is debris in the arms. the spray arms only rotate by water jetting from angled jets at the end of the arms. take them out and make sure all debris removed

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