Question about LG LDF6810ST Stainless Steel Built-in Dishwasher

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Drying problem Hi Our 3-day old LG dishwasher is not able to dry our dishes. After the cycle is finished 2 hours later, I open the door to find that water is everywhere. As if the washer is skipping the dry sequence completely. The "vent" on the inside of the door doesn't seem to have an outlet--why is this a vent if nothing can escape? The owner's manual says to use a rinse aid to help drying. I don't believe in using band-aid's; something else is wrong. Any help/advice is appreciated. Thanks, Kris

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  • JAB48 May 16, 2008

    I have the same problem I was told by an appliance store owner that they had a problem with this issue. The fix is to change the fan use a larger duct and I also use a bigger heating element.


  • Rodrigo Sisti Feb 11, 2009

    Hi mzpeder,

    I have the same problem with my dishwasher (the heater never goes on), and cannot get neither hot water nor dried out dishes. As I am living out of the US, would you clarify which board is the one you had to replace ? I noticed there is an electronic board in the bottom of the dishwasher and another control (display) built in the door. Which one was deffective in your case ? Thanks.

  • MOTRSPRT Mar 17, 2009

    Well, since I am the original poster of this thread I just read the resolutions to this issue today. I finally got one email verifying me of posts to this thread :) Oh well.

    Anyway, I have resorted to using a drying aid in order for my dishes to get dry. I know the heater element is working because if I open it at the end of the cycle the air is extremely hot--but moist. (In fact, if I run the washer the night before and open it the next morning the air is still warm.) Hence, the dishes remain wet with hot water. The idea of the air vent in the door recirculating the air to the tub is interesting. I don't know where the air would exit to the tub. Bottom of the door? Someone mentioned a fan in the door that runs while drying the dishes so I'll have to listen for the fan running.

    Bottom line, my dishes are only getting dry due to the rinse aid I'm using for every wash. Maybe I'll let the rinse aid run out and see if something has changed in the dishwasher over the past year. Maybe the valve in the door vent was stuck and it's working now? I dunno. I'll try and post my results later to keep this thread somewhat informative for other owners.


  • MOTRSPRT Mar 23, 2009

    Well, so far so good. I have flushed the rinse aid dispenser several times to make sure there is no residual rinse aid still left in there. And, the dishes are still coming out dry. I wouldn't say my issue is 100% solved yet because I am not 100% sure that dispenser is completely rid of rinse aid. However, not once yet in the past week or so my dishes have finished wet. When the dw was new the dishes were as wet as if I sprayed them with water, so I'm hoping that something has changed...:)


  • MOTRSPRT Apr 02, 2009


    Here is the serial # to my dishwasher: 708KWBY01429

    Here is the model # to my dishwasher: LDF6810ST/01

    None of which seems to match your expected #'s though...


  • james_smi7 May 09, 2009

    I have the LG model # LDF6810ST/01 SN 705KWJUO3444 - it's not drying.. Can you help?


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As I had the same problem, I worked on my machine and found out the heater unit was not working (it is a brand new machine ! - remark : as I moved overseas, LG did not cover it with their warranty).
But back to what I did : I ran the check program (instructions can be found in the Service Manual) and verified it was sending voltage to the heater on step 36. So I checked the heater unit (in the bottom of the machine) and found it was burned or open. So I ordered a new heater assembly ($40 on eBay), replaced it myself and am completely happy with the results.
Remarks : the heater is powerful enough to heat cold water to the temperatures required (I don't have hot water in the faucet); it seems that the heater also produces heat for the drying cycle (my dishes were completely wet at the end of the cycle before, now they get completely dry). My only disappointment, mentioned by some in the forum, is that the outlet during the drying cycle is in the bottom of the door, so steam condensates into droplets on the kitchen floor. But now I get clean dishes, and this machine is amazingly silent and efficient. Good luck to you !

Posted on Mar 17, 2009

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Hi Motrsport,

I have the exact same problem with a new LDF6810ST. But it took me a month to realize.

The vent in the door DOES have an outlet. It has both a valve and an active fan to drive dry air in and moist air out - through vertical ducts to the left in the door assy. You can actually see the rubber cap of the valve through the vent grill in the door and weakly hear the fan when it runs, approx. last 30 min. of cycle.

Now I have had the unit serviced twice through LGE, the tech found that the motherboard in the board was not turning on the heater in step 36 (service mode). I am now awaiting a replacement of the motherboard and the heater by local LGE rep.

So call LGE for service while you are still under warranty. You should not accept soaking wet end of cycle.

Good luck!

Posted on Apr 23, 2008

  • Mike Pedersen Apr 02, 2009

    Hi all,

    My problem was never solved with the first unit LGE could not bring the heater/fan to work after 4 visits. In June 2008 we got a replacement new and modified model LDF6810ST/01 installed. It worked fine for 1.5 month then it had a major leak all over my kitchen, damaging my wooden cabinets, after another two repair attempts, I forced LGE and Home Depot to take everything back. Their customer service was very unpleasant, they never appologized or offered to cover some of my lost work time - being home for six repair attempts + one re-install.

    I see no need to write my opinion about LGE.


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My LG is 712KWEL00012. Is this eligible for retrofit? How do I ask for it?

Posted on Nov 27, 2009

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If you post your serial numbers of your LG dishwasher model numbers ending in the numbers xx11 and XX12 we can check to see if they are eligible for a retrofit that can dramatically help with the drying. The initial design in the earliest models of these LG dishwashers were flawed.
Also, these dishwashers are not designed dry well without a rinse aid. Some folks have had good luck putting white vinegar in the rinse aid dispenser, but your mileage may vary.

Posted on Apr 02, 2009

  • rickvoo66 Apr 10, 2011

    I'm not a plumbing professional but I just replaced an LG dishwasher heating element. Wife complained dishes weren't drying and there was a bad odor inside the dishwasher. To me, it was clear that the sump heater wasn't heating the wash and rinse water. Not difficult to do. As mentioned above, disconnect water supply line by removing small panel at the bottom front. Make sure to turn water off first. Then disconnect dishwasher drain tube under your sink, this allows dishwasher to be pulled out of cabinet. Turn dishwasher over ( easy, very light weight). Remove sheet metal pan on bottom to expose the sump, motor, pump, heater etc. You'll see the ends of the heater element sticking out of the sump assembly. Usual instructions recommend removing the large plastic base but I found that the heater could be removed and reinstalled by simply sliding it out and into the gap between the plastic base and the washer cabint once I removed the sheet metal side panel on the dishwasher. I tested my heater with a volt-ohm meter and found it to be defective ( this is what I hoped for since new heater is only $50). Got new heater ( SEE PICTURE) and installed it in about 30 minutes. The only fussy part was knowing how tight to turn the small bolt which squeezes the rubber seal. I was conservative the first attempt and had a water leak where the heater fits into the sump. You'll see this and understand how the bolt and rubber seal work once you get the heater out. Turned the bolt more and the leak stopped. Washer works great now, wife happy. Congratulate yourself on saving $200. My dishwasher is LG Model LDF 6810ST. Damn expensive so I'm glad this simple fix worked well. Bought heater from


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Be sure to select if possible a cycle with heated dry or that heated dry is not unselected, d/w now are designed with rinse aid in mind, not really a band-aid but a legitimate action. and yes there is a vent w/ no exhaust. its actually a very clever active vent that returns moist air(thruough a channel within door assy) back to bottomof tub. itsjust steam all condenses to water droplets inside. why heat your kitchen with it.

Posted on Feb 23, 2008

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