20 Most Recent Samsung DMT300RFS Builtin Dishwasher Questions & Answers


Hello Randy Lowe,

There is an EXPECTED INITIAL failure period
on new equipment...!!

Use your warranty...

Brand new = Take it back & get a GOOD ONE.

Carnac the Magnificent

Samsung... | Answered on Apr 22, 2017


might be the moisture sensor nxt to the float. They are both located on the left side where the fill tank connects to the outer side of the tub. It requires removing the unit, turning it upsde down, and opening some framework to get to it. there are instructions on the low-level sensor error page here somewhere.

Samsung... | Answered on Apr 04, 2017


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.

Samsung... | Answered on Apr 04, 2017


your owners manual fault guide will tell you what all blinking lights mean ie,,,how many blinks will tell you where the fault lies

Samsung... | Answered on Apr 21, 2016


Your dishwasher is equipped with a leakage sensor located at the bottom center of the unit underneath. If any water is detected, the sensor shuts down power until the problem is corrected. Check underneath FIRST to make SURE there is no water dribbling from a small leak. Look for telltale residue trails left from evaporated water on the hoses, lines, motors, etc.
You can enter diagnostic mode by pressing and holding for 2 seconds the POWER, HEAVY, AND DELICATE BUTTONS. All the l.e.d. s will be lit for 2 seconds, then the software version will be displayed in binary code by the blinking of the WASH, DRY, CLEAN, AND CHILD LOCK l.e.d. s. Next, and this will take some practice, if there are error codes present(sets of blinking lights) you will have to read them to be able to find out where the problem(s) is.

•Press the Heavy + Delicate + Power buttons at the same time for two seconds to enter Service Test Mode.
•All LEDs are displayed for the first two seconds and then Software version will be indicated in Binary Code using LEDS ....Wash / Dry / Clean/Child Lock
•Just like the DMR series you advance through the test next mode by pressing the Normal button . However each test will run by itself (see sequence chart on next page) when test has completed an led will light to indicate test is done and you can then advance to the next test .
•Code list and descriptions located on pp#3. Note: Like the DMR series the codes are displayed during operation or test modes and are not stored in memory.
Service Test Modes & Codes
I hope the following pix are clear enough for you to read, if not I will re-send them! I hope this helps you!

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Samsung... | Answered on Sep 05, 2015


Couple of questions?
1. do you have a water softener?
2. what type of detergent are you using and how much?
3. is the detergent HE rated?

To clear out the suds run a cup of white vinegar with 4 liters of cold water and run a rinse cycle. or just put a cup of white vinegar into the dishwasher and run a normal load with NO SOAP... you need to clear the suds from the system to work properly again. the proper detergent to use in most new dishwashers is powder style that is HE rated. and don't use a lot either.

Samsung... | Answered on Apr 09, 2015


The water-fill SENSOR is what Samsung calls the "Case-Brake Assembly". It's the big transluscent plastic thing on the left-side of the dishwasher.

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

Samsung... | Answered on Feb 23, 2015


Yeah, those gaskets tend to stretch with age (and hot water). They need to be replaced with new gaskets.

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

Samsung... | Answered on Jan 31, 2015


Most manufacturers recommend inlet water temperature of 120 degrees F. During the main wash cycle, the dishwasher will heat that up to between 140? and 165?, depending on what cycle and options are chosen.

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

Samsung... | Answered on Jan 31, 2015


Does it work properly if you advance the switch through the cycles by hand? If yes, the cycles are all fine, the timer motor that drives the timer is bad.

Samsung... | Answered on Aug 15, 2014


he float on all dishwashers is on bottom, inside, where the water sits. It controls the water shut off point. They are usually not removavble for cleaning. You simply wipe around them and make sure nothing has accumulated or lodged underneath that would stop if from floating freely.

Samsung... | Answered on Jun 05, 2014


First be sure to disconnect/shut off water and power before beginning. Facing the washer pull it out. On the left side, outside, low, there is the water level sensor. It gets gunked up and trigger lever gets stuck. Clean it out and you will be good to go.

Samsung... | Answered on Jun 03, 2014

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