Question about LG Dishwashers

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I have an LG dishwasher lds5811ww -- for about 1.5 years. Purchased it at Best Buy. The soap dispenser is not emptying completely anymore. The upper rack is in its uppermost position. I suspect that the top two spray bars are not turning around because they have not changed positions when I suddenly open the dishwasher while in operation. The spray nozzles do not appear clogged. Any suggestions?

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  • bryce270 Dec 27, 2008

    The soap dispenser can be cleaned out by hand with out a problem, but it continues to not empty all the way now each time we use it and the dishes are not getting clean. The dispenser opens as it should but i wonder if the water is not getting to the soap?

  • bryce270 Dec 27, 2008

    My LG LDS5811 dishwasher is not thoroughly cleaning the dishes anymore. When this happens, I have noticed at the end of the cycle that the soap dispenser door has been opened as it should during the cycle but there is still some soap caked in it. Any ideas?

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3 Answers

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If your dishwasher is cleaning poorly, check these:
Water-inlet valve Internal filters Drain valve Spray arms Water temperature Detergent cup Water-inlet valve Most cleaning problems are caused by the dishwasher not getting enough wash water, so the water-inlet valve is often to blame. This valve is usually at the bottom left or right of the dishwasher, behind the lower access panel. It's the device with the main water line from the house, a rubber tube to the dishwasher, and two wires attached to it. 
When a water-inlet valve is defective, you may hear the sound that's usually referred to as "water hammer." If the water-inlet valve is defective, you need to completely replace it. 
Dishwasher Water Inlet Valve Replacement
Be sure to read and understand any instructions that come with the new water inlet valve.
Tools required: 
Adjustable wrench
Multi-Screwdriver 
Pliers 

Step 1. Disconnect the dishwasher from its power source. 
Note: Dishwashers are usually wired directly to the home’s electrical system. To disconnect the power, switch off the circuit breaker or remove the fuse for the electrical circuit the dishwasher is attached to. Try to turn the unit on after disconnecting the power to be sure you were successful. 
CAUTION: If you’re not sure you’ve shut off the power properly, DO NOT CONTINUE. Call a qualified appliance repair technician to complete the repair. 
Step 2. Turn off the water supply to the dishwasher. This is usually underneath the kitchen sink or in the basement or crawlspace near the location of the dishwasher. Pliers may be helpful here. 
Note: If there are no shut-off valves, you must shut the water off at the main water supply valve for your home. 
Step 3. Remove the lower panel(s) of the dishwasher. These are usually held by 2 to 4 screws at the upper and lower corners of the panel(s). 
The inlet valve is usually near the front of the dishwasher. Attached to the valve you’ll see: 2 or 4 wires, the water supply line from the house and the water feed line that goes to the dishwasher. 
Step 4. Remove the household water supply line from the valve. The line is usually secured with a brass compression nut. The water supply line is usually copper or braided stainless steel.
CAUTION: Water supply line may be hot. 
Step 5. Remove the fitting from the valve the water supply line was attached to. This fitting may be very difficult to remove. It may help to put the valve into a vice in order to remove the fitting. If you cannot remove it, replace it. The fitting is not an appliance part but a plumbing part that is available at most hardware stores.
Step 6. Remove the screws holding the valve to the dishwasher frame. 
Step 7. Label the wires to the valve so you’ll be sure to reattach them correctly. 
Step 8. Remove the wires from the valve. 
Step 9. Remove the clamp on the black rubber water discharge tube and pull the tube off of the valve.
Step 10. Reinstall the old fitting (or a replacement fitting if necessary) onto the new valve the water supply line was attached to. Use Teflon tape or pipe joint compound as a thread sealant. Make this fitting tight to prevent leaks. Make sure that the fitting points in the same direction as the old one so that the water supply line will meet up with it properly. 
Step 11. Install the new valve in the reverse order of the removal instructions. 
Note: The water supply line is under high pressure. Be sure to tighten the fittings properly. 
Step 12. Turn on the water to the machine, and check for and correct any leaks. 
Step 13. Reinstall the access panel(s). Restore the power to the dishwasher and test. 
Note: You may have to let the dishwasher run a few minutes before it reaches the next water fill cycle.
Internal filters Every dishwasher has some type of filter to keep large food particles and foreign objects away from the pump assembly:
Most modern dishwashers have self-cleaning filters that don't need any routine cleaning. 
Some have filters in the bottom of the dishwasher that you need to periodically clean. You don't need any tools to remove the filter, and cleaning it is easy. Consult your owner's manual to determine which type you have and its maintenance requirements. 
If your filter is clogged, it may be causing the cleaning problem. 
Drain valve Some dishwashers have a valve (or gate) that should open only during draining. If debris lodges in the valve, it can't close properly, so water drains out during the wash cycle. Most dishwashers drain into the garbage disposer. If yours does that, listen for water flowing into the disposer during the wash cycle. If you can hear it then, the drain valve may be clogged.
Spray arms There's a spray arm at the bottom of your dishwasher--it may have a tall spray tube mounted to the center of it. There may also be a spray arm located directly beneath the upper rack of dishes and/or above the upper rack.
If debris is blocking the holes in the spray arms where the water comes out, it could cause cleaning problems. Regularly inspect each of the spray arms and clean out the holes as necessary. 

Water temperature To get the best cleaning results, the water entering your dishwasher needs to be hot enough. Try running the hot water in your kitchen sink for about 30 seconds before starting the dishwasher, to pre-heat it. Also, if your dishwasher lets you select a higher wash or rinse temperature, try that to see if it helps. 
To check the temperature of the hot water that comes from your kitchen faucet use a waterproof thermometer. If the water isn't 120 degrees Fahrenheit, your dishwasher may have trouble getting your dishes clean. You could increase the temperature of the hot water to the whole house--and therefore the dishwasher--by adjusting the hot water heater thermostat.
Warning! To lessen the risk of scalding, don't set the hot water heater temperature higher than 120 degrees Fahrenheit. 
Detergent cup Dishwashers don't perform their best if detergent is introduced only at the beginning of a cycle, so add detergent to both parts of the cup. 
If the detergent cup isn't opening, see the "The detergent cup doesn't open" section, below. 

Posted on Dec 27, 2008

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  • 4 more comments 
  • blueextc3221
    blueextc3221 Dec 27, 2008

    Sorry link is not working properly.

    This one will almost get you there...

    http://www.lge.com/support/manual.jsp

  • blueextc3221
    blueextc3221 Dec 27, 2008

    Try and clean your washer out with a whole bottle of CLR or LIMEAWAY, wait for the initially drain cycle to finish and pour in the whole bottle and let it run through the longest cycle, this will clean any soap and hard water lime and make it like brand new,

  • blueextc3221
    blueextc3221 Dec 27, 2008

    Did you recently change to the powder kind of soap. some times the powder kinds of soap do not get taken out all the way especially if you put it in the part that has to open.


    If that is not the case you must have a blockage in the sprayer part that iasn't giving the same amount of water as it should. A limestone Composite or hardwater buildup may be causing this.

  • blueextc3221
    blueextc3221 Dec 27, 2008

    Just make sure you are not blocking any moving parts when you load it, like the door or some spinners. Water has to be able to circulate, That water sprayer needs to spin. Try running an empty load, or very small to see if it opens in that case.
    I also noticed a bunch of **** in the drain screen of mine, so you may want to pull that out and clean i well while you are at it.

  • blueextc3221
    blueextc3221 Dec 27, 2008

    Most dishwashers work by pumping water from the sump at the bottom into two jets, one directed down into the top spray bar and another directed upwards into the bottom one. The effect of the water escaping from the directional holes on the sprays bars is to make them go round like a "catherine wheel" or one of those rotating lawn sprayers. For the system to work, three conditions must be met.
    1) the pump must be pumping water to the spray bars,
    2) the spray bars must be free to rotate [they are usually held in place with knurled nuts you can remove by hand - watch out - one may be a "left hand thread", needing to be turned clockwise to remove it] and
    3) the spray bar jets must not be clogged with food debris or chips of broken crockery.

    If there are no splashy sounds when the machine has filled - possibly just a humming - then the pump might be blocked. The machine may also fail to pump out if this is the case, if it only has one pump.

    If there is a definite sound of violent water splashing, but most of the dishes remain less than cleaned, then maybe one or both spray-bars are stuck. Check to see if they spin freely when whizzed round by hand. If not, remove the knurled nuts that keep them on their shafts ( by hand - they are usually only plastic) - like I said before, watch out - one may be a "left hand thread", needing to be turned clockwise to remove it - and carefully lift them off their spindles, taking note of the order in which the washers etc come off, then try to figure out why they are stiff.

    If they revolve freely, but can't seem to be bothered to do so when the machine is running, check that they are not blocked up with debris. Take them off and rinse them out. Check the little holes along the bars for bits of paper etc sticking out. Remove all debris that you find. Shake the spray bar while cleaning it - if it rattles there are probably bits of crockery or glass in there, awaiting your attention.

  • blueextc3221
    blueextc3221 Dec 27, 2008

    I had a similar problem and I ended up buying a new dishwasher. My problem.I found out was that the timer was not staying in the wash cycle long enough. If your washer is old (mine was 18 years old) this may be the problem. Turn the washer on and don't walk away!! It should stay in wash cycle for at least 5 Min's if after one or two minutes it goes into rinse than the timer is bad. I looked into replacing the timer and it was cheaper and easier to buy a new dishwasher.

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Try running the rinse cycle with hot water once or twice, that should clear the dispenser. will wait for your further comments.

Posted on Dec 27, 2008

  • Suresh Thrithandam Venkata Lakshmi Narayana

    Most likely the small electric motor that moves the water injection
    pipe on to the various outlet manifolds has stripped its plastic
    gears, afraid the only solution is a new soap dispenser assembly.

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Hi there,

Well you can please follow the below steps -
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2. Close the dispenser, and shut the dishwasher door. Turn the dishwasher on to a manual setting, then stop it and open the appliance. Check to see if the dispenser is open. If it is, continue to Step 2. If the dispenser is closed, skip to Step 4.

3. Switch dishwasher soap. Some dishwasher dispensers have difficulty with dry or liquid dishwashing soap, depending on the make and model of your dishwasher. Incompatibilities typically result in the dispenser sticking shut, which explains why the dispenser opens when empty. Switch to liquid soap if you are using dry powder soap, or vice versa.

4. Check the dishwasher soap dispenser's spring. The spring is located behind the dispenser top's hinge. Consult your dishwasher's original manufacturer's manual or user guide to find a replacement spring. Pop the old spring out with a screwdriver, and replace with a new spring. This should resolve any issues related to the dispenser failing to open.
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