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LG dishwasher does not clean the dishes and reaks of burning plastic

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  • Jeff Meyer May 11, 2010

    What is the model number of the LG dishwasher you own?


    Approximately how many years old is it?

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Unless I know what model # of LG dishwasher you have, it is hard to step you through the process of removing the filter beneath the lower spray arm and removing the offending objects from that area.
But once you remove all debris, (and possible scrape the heating element to remove the plastic) you should have much better results.
Also, after the debris is removed and you are running again, I recommend that you only use a name brand powder detergent (Electrosol or Cascade) and never use gel or tablets in your dishwasher. Folks who switch to a cheap/generic powder will almost always begin having uncleaned dishes after a few loads.
Good Luck. Please report back what you find, OK?

Posted on Apr 08, 2009

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Dishwasher overheats. Melts plastic dishes.Dryer cycledoesnot shutoff. Could this be a stuck timer? What to do?


Most dishwashers have safety thermal switches in place. If your dishwasher heater rise up above the normal temperature then this safety will burned out stop the runaway heater. Having said this

a) May be your timer is stuck. Is it mechanical or electronic. If mechanical you will see the timer not reaching end of cycle.

b) Sometime light weight plastic dishes fly off rack in wash cycle and land on the bottom of dishwasher touching the heater. Of course these will melt or burn when the heater comes at towards the end of cycle. THIS IS COMMON.

Sep 26, 2014 | Dishwashers

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The lg dishwasher doesn't use all of the detergent and the dishes are not 100% clean


first check the water supply if good water pressure.then check the pump under the bottom dish tray remove parts check for debree.

Jan 25, 2013 | Dishwashers

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My LG LDF6920St has not been cleaning very well recently and there was an odor and grease left in the bottom after a wash. I pulled it out and found the Float Assembly pretty clogged and dirty, which I...


1 Scrape and rinse dishes before putting them in your appliance. Small food particles, grease, sauces and bones clog up the system, keeping the dishwasher from properly rinsing your dishes. You don't need to prewash the dishes but be sure to rinse off any solids.
2 Use a toothbrush to clean around the dishwasher door.
Clean around the seal and hinges of the dishwasher. This area often is forgotten and holds a good deal of bacteria and food splash. A tooth- or bottlebrush is the best way to get into the crevices.
3 Clean chunks of food out of the screen and drain at the bottom of your dishwasher, recommended The Family Handyman. If the drain is plugged, the dirty water can't be washed away and ends up back on your dishes. Nut, bean and seafood shells, bits of plastic and small dishes can lodge against the drain, keeping it from doing its job.
4 Unclog the holes in the sprayer arms. If the holes are blocked by food or soap, water cannot freely spray inside the dishwasher to thoroughly clean the dishes. Leftover food on the dishes can make the dishwasher smell.
5 Keep space around your dishes. Overloading a dishwasher keeps it from running efficiently, allowing gunk to build up around the drain and the spray arms.
6 Run your dishwasher as hot as possible to break down food and grease. The recommended temperature is 120 F.
7 Run the dishwasher with vinegar added to neutralize odor. Empty the dishwasher, place a dishwasher-safe cup filled with white vinegar on the top rack, and run a cycle at the hottest setting. If you prefer, use unsweetened lemonade powder or baking soda in place of vinegar.

Jun 21, 2011 | LG LDF6920ST Stainless Steel 24 in....

1 Answer

OK, so if the dishes are not getting cleaned, particularly anything plastic, then what?


Is the water around 130 F, if so make sure you run the water at your sink till the line fills with hot water before starting the machine. Make sure your getting enough water and that the spray arms are turning and clean.

Nov 22, 2010 | LG LDF9810ST Built-in Dishwasher

2 Answers

LG LDF6810ST Dishes Wet


To save energy, the LG LDFx810 dishwasher product family does not turn on the heating element during the drying cycle (third blue light blinking) rather it brings the final rinse water up to a high temp (I think it is 160 degrees (f)) and then uses a condensing drying system (mounted in the door) to pull the wet, hot air from inside the dishwasher. When it works, the dishes come out pretty dry (except for some plastics)

Check this:
-When the DW does its final drain, confirm that the water drained into the garbage disposal is really hot and not just warm. Be careful to not burn yourself and use a meat thermometer if you have one.

- After the water drains for the final time and the dishwasher blinks the third light, put you hand under the left hand side of the DW door. There is a slot down there that should be exhausting warm air.

If either thing is not happening, it is time to get a professional to check things out and make repairs.

Please post back here with what you find or have further questions, OK?


Aug 12, 2009 | LG LDF6810ST Stainless Steel Built-in...

2 Answers

I think our dishwasher is burning our dishes


Your pump is clogged.

Remove racks and inspect pump at the bottom center of dishwasher. Remove pressure arms.and clean out debris from tips.

Remove screen and cover to impeller and wet vac out all the grunge, especially plastic and glass pieces.

Good Luck

Jul 29, 2009 | Whirlpool GU2200XTSS Built-in Dishwasher

1 Answer

Mold growing on dishes


Recommend that you run another cycle with no DW soap aded, waiting until the dishwasher has filled with hot water and begins to do the first wash cycle. Then add 1/2 cup of bleach to the water and close the door. Allow the cycle to finish. Run it normally with a standard load of dirty dishes. Note: These high efficiency dishwashers count on the "dirt" of the dirty dishes to help wash/clean the dishes. Recommend you not rinse/wash the dishes before you put them in the dishwasher.

Watch for any occurrence of the black dots and repeat the bleach treatment.

Jul 22, 2009 | LG 24 in. LDF 7811 Stainless Steel...

1 Answer

Frigidaire dishwasher heated dry way too hot


Wow. So glad to hear that you had no permanent damage.

Jun 19, 2009 | Dishwashers

1 Answer

Dishwasher not cleaning the dishes


Hi there. Here are some solutions that may help you combat this issue with the non cleaning of the dishes during the wash.


• 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°F (49°C). (See
Factors Affecting Performance.)
• Check water hardness. For extremely hard
water, it may be necessary to install a water
softener. (See Detergent Chart.)
• 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.
• Check to see if the rinse aid dispenser
needs refilling.


Next, you mentioned in your text that you were experiencing a burning scent after the was or during it. i have a few solutions for that as well.

• Soiled dishes left in dishwasher too long can
create an odor. Use Rinse & Hold cycle.
• There will be a "new" smell when first
installed. This is normal.
• Check to see if unit is draining properly.

One more thing, sometimes food or plastic dishware will fall between the spaces in the basket that holds the dishes. these plastics can be burned by the heating element inducing a burning scent during the drying process. always make sure that all plastics are secure before you start the cycle. food can get stuck on this heater element as well causing a burned smell.

Feb 15, 2009 | Dishwashers

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