I have 3blinking lights on a Samsung dishwasher DW9733LRABB/AA the normal,heavy, and smart auto

The Normal, Heavy and Smart lights will blink when there is low water level in the dishwasher. Check that the sump area isn't blocked from filling with water. Often there is a float inside the tub that can be held down by a utensil that fell under the lower basket. Remove any foreign objects. Then try to run the dishwasher when it is completely empty. The parts diagram for the dishwasher is available here: https://www.searspartsdirect.com/model/60yajq87a8-001482/samsung-dw7933lrabb-aa-01-dishwasher-parts . If there isn't an obvious blockage in the water level monitors, you could have a wiring problem or an issue with the control board that doesn't get the signal for water reaching the desired level. (Note: if the incoming water pressure were too low, only the Smart light would flash.)

The manual for the DW7933LRABB is available from Sears Parts Direct on the product page: https://www.searspartsdirect.com/manual/60yajq87a8-001482/samsung-dw7933lrabb-aa-01-dishwasher . The current link to the manual is https://c.searspartsdirect.com/mmh/pd_download/lis_pdf/OWNM/1206228L.pdf .

I hope this helps.

Cindy Wells

Water level error. Most likely brake case assy.

A Samsung Dishwasher flashing the Smart Auto light indicates a Water Supply Error (Not Enough Water) has been detected by the internal electronic diagnostics.
You can find more info here
https://appliancerepairinfo.com/samsung-dishwasher-smart-auto-light-flashing/

This may help its a PDF, right click and open however, tells what the lights are and possible problems/solutions. Good Luck tim


http://www.applianceblog.com/mainforums/attachment.php?s=5c81371564d95e9ddfea98fd85bf5680&attachmentid=17263&d=1402739707

Hello. The lights you describe are an error code that means over-level filling (overflow condition) and/or the leakage sensor underneath has detected water. You need to check underneath the unit for any moisture. There is a leakage sensor located at the center of the base, underneath the unit. If it detects water, it will notify the main board which will stop the unit until the condition is cleared.

I would check the drain itself. Make sure there aren't any eating utensils getting caught in the drain area.

That's a High-temp Heating Error. It's usually caused by a bad ECS sensor. You will need to call a professional repairman to replace it. (I recommend Sears).

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

This is usually caused by a bad ECS sensor. (You can get to it from the right-side of the dishwasher, after you remove the metal panel.)

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

Try to unstick the float. The float tells the DW how much water is in it at any given time. It is shaped like a mushroom on the bottom of the DW basin. Gently pick it up and set it back down. Does it seem free? Try the cycle again.

I have a Samsung DMT400RHS and I started getting the low water level error ('Normal'+Heavy'+Smart Auto' LED blinking). The error started intermittently a few weeks ago, but the the last day or two the problem was solid, and simply restarting the cycle no longer worked.
I looked of the code in the dishwasher user guide and it said 'low water level.' Searched the internet and located the repair manual at tradebit.com for $15. The manual was well worth the $15.
The manual suggested: 1) loose level sensor connector 2) Faulty Assy case sensor or stuck floater aka 'remove foreign matter' 3) Bad Main PBA assy.
Since we do 10+ loads a week for the last 18 months the stuck floater seemed to be the most likely cause.
Go to Samsung DMT400RHS Low Water Level Error ('Normal'+Heavy'+Smart Auto' LED) (new link is https://photos.google.com/album/AF1QipNtp1neOR7icVG8cSs71bLpxQD5k_xljiWcJD2P click the i on each picture to see the caption - DM 04/17/2016) to see the pictures and read the captions documenting what I did. Do this at your own risk. You must turn off and disconnect the electric power and turn off the water supply before you begin.