Question about Samsung DMT300RFS Builtin Dishwasher

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Samsung DMT300RFS dishwasher; low-level water error

Low level water error comes up. Manual solution: with the dishwasher empty, add detergent and then run accycle. i've don it. It worked on one load. the same error came up on the next load however. Any sugestions greatly appreciated. Thank you Peter C.

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  • Anonymous Mar 16, 2014

    low water level

  • Anonymous Mar 16, 2014

    low water level

  • Sterling Forest
    Sterling Forest Apr 04, 2017

    dnmtsn has the best answer on this page. It's pretty involved, but most likely the culprit. If your DW was ever upside-down, had a chance to grow mould, or developed some current between the water-sensing electrodes because of hard water, it will think the dishwasher is flooding and immediately drain.

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A Samsung service tech showed me how to fix this one. You can take that float and the white box apart from the dishwasher and once opened, if its like mine, there will be gunk on the float and in the box at the line where it fills with water. This gunk floats in there and prevents the float from swinging and activating the switch. Just clean that gunk out with a toothbrush, I end up doing mine about once every four months, and it should work fine again. This tech said to prevent this, make sure the water is hot at the beginning of the cycle and pre-rinse the dishes-but this doesn't seem to work with mine.

Posted on Jul 25, 2012

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  • Chuckles Mar 26, 2013

    Where is the float valve located in the Samsung DMT300?

  • jeremiahburt
    jeremiahburt Apr 01, 2013

    How do you take the darn flow control off? On mine it's attached to a white plastic water intake piece.

  • DYIJon Apr 18, 2013

    no float valve on a DMT300RFS, it has a flow meter

  • Diane Meistad May 17, 2013

    What can you do if it's a flow meter? We too have this issue with our DMT300RFS. Purchased 14 mo. ago.

  • Dave Ross Oct 01, 2013

    I was able to get to the float mechanism and played with it long enough to get it moving freely. but couldn't figure out how to take it out to properly clean it. Is there a trick to this?

  • Cary D
    Cary D Dec 20, 2013

    Dave, there must be. This is the third time we have had the same problem with this Samsung. I can't figure out how to get the tank off to clean it. Last Samsung that I'll ever buy.

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I did exactly what was said in the first post and it worked like a charm. There were a lot of screws but if I had to pay a service guy to clean my machine I would have been mad at myself. Thank you, you solved an issue that has been angering me for weeks

Posted on Mar 30, 2013

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Check under the strainer by unscrewing all screws and then pulling it up and out. I found 3 juice box straws to be the problem!

Posted on Feb 08, 2015

  • Dave Vermullen
    Dave Vermullen Feb 29, 2016

    Cleaning got it running again. Don't know why there are so many screws down there, but once they're out, cleaning was a breeze. She's running great so far. Will keep the float cleaning tip in mind for the future. Thanks all!

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Posted on Jan 02, 2017

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SOURCE: My Samsung DMR57 Dishwasher gives me error code

Our unit started displaying code 9E after filling, draining and filling again. At the beginning it was enough just to restart it. Finally this trick didn't work anymore. Before calling service for out of warranty I decided to take the unit out of the cabinet and start it. Of course this didn't fixed the problem. Then i noticed where the water comes in and I took off the panel on the left side bottom. 366571e.jpg
Under the panel there is a white box that has a floater inside. The floater is pushing a lever that actuates a micro switch. I noticed that the lever wasn't moving as the machine started to fill in with water. The lever was stuck. An easy touch on the lever fixed the problem and the machine started working. 677e4ea.jpg
I will put back the washer for now but if it happens again in the next future i'll have to find a more permanent fix.

Posted on Sep 21, 2010

  • 1 Answer

SOURCE: Low water level error with

Do you hear the washer draining (into the sink drain) after it fills and should start washing? Check that nothing (sound deadener, etc.) is interferring with the drain valve lever arm.

Posted on Feb 08, 2011

  • 8404 Answers

SOURCE: The dishwasher detergent box is not springing open

This is brand new? Simple. Call the salesman and tell him the trouble. It is covered under warranty. If you fool with it you will void the warranty.

Posted on Sep 19, 2011

  • 1 Answer

SOURCE: i have a samsung dmt300

I would remove and examine the wash arms to see if any of the holes are plugged with food or mineral deposits. Clear any food with a paper clip. If you have mineral deposits, remove the deposits with Lime Away or CLR cleaner. Hope this helps you.

Posted on Sep 16, 2011

  • 3 Answers

SOURCE: I have a DMT300rfw samsung dishwasher. The other

I just had this same problem, and I think I figured it out. There was water on the bottom from the last cycle, so I pressed HEAVY and DELICATE at the same time for 3 seconds (you'll see it printed on the control panel), and the unit drained. I was then able to start the new cycle normally without the error. Hope that helps!

Posted on Feb 06, 2012

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Dishwasher starts and then stops with 9E flashing in window.


The 9E issue indicates a low water level in the dishwasher. Check your hoses. Make sure that no dishes flipped and filled with water. Make sure that the dishwasher is level. Next check if there is any debris blocking the water level (overflow) sensor. It's in a small square plastic box on the left side of the dishwasher. Pull the dishwasher forward and check for loose or damaged wires to the water level sensor.

If the wiring is good and the error persists, replace the sensor. Replace the wiring if it is damaged. If you add a comment with the model number, I may be able to point you to the replacement part. If your dishwasher is under warranty, contact Samsung for the repair.

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