I have a LG dishwasher model # LDS5811WW is there a filter of some sort at the water intake? My water has be known to have sand in it . The dishes are not all washing some are some aren't.

Check water hose leading to the dishwasher for deterioration..

If you live in an area with hard water, the grit is probably hard water deposits. Dishwasher detergents no longer contain phosphate, so the detergents often leave behind hard water deposits on your dishes. There is a great solution at www.cloudydishes.com

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.

Hi,
Check your heating element..

Dishwasher Problems The Heating Element not Working
http://www.fixya.com/support/r4589033-dishwasher_problems_heating_element_not

Dishwasher Maintenance
http://www.fixya.com/support/r4319937-dishwasher_maintenance

heatman101

check for voltage at the water valve when it should be filling Try disconnecting the Water Valve outlet from the DishWasher and run the output into a bucket if all is well with the valve then remove the door panel and inspect the wires near the bottom of the door. the wires get buried in the tar like insulation causing the wires to break as the door is opened and closed.That tar like substance is one of the worst things they could of ever put into that machine causes the wires to break apart adn become brittle

The drain line is clean. Have you checked to make sure the the rest of the drain is clear all the way down to the main drain?. Also check the pump to make sure that it is working properly, it might be pumping water in, but it may not be wanting to pump the water out

Yes. If you disconnect the water line from the dishwasher you will see a screen inside the inlet to the water valve. This should be a Fix-Ya for your dishwasher. Thanks for the question.

You may be getting sand in from the supply lines. Fill a clear glass container from the sink a few times and look at the bottom for sand particles. You may be getting sand from a pool filter? Remove the filter from the faucet head (it should unscrew) and look for sand particles in it. You may not be getting them in the kitchen sink if the dishwater inlets are below the sink as the particles may be sinking to the bottom of the pipes. You may need to put a filter in the dishwasher inlet. Try filling the dishwasher by hand with bottled water once and then see if the sand is still there. If so, it probably comes in through the water supply.

Most dishwashers have a little filter basket in the bottom. Depending on the brand, you can slide out the bottom rack, and in the bottom underneath the sprayer (the propeller thing) there should be some sort of basket that can be removed and cleaned. You also may have some water quality issues, or some detergents will leave residue. Also, make sure most of the large food is removed before loading.