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Author Topic: Over-level water error Samsung DW80F600UTS/AA 01  (Read 1266 times)

Offline jkandra

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Over-level water error Samsung DW80F600UTS/AA 01
« on: June 07, 2017, 03:08:34 PM »

I have a Samsung DW model DW80F600UTS/AA 01 and have been having trouble with an over-level water error (Smart Auto and Heavy lights flashing). Initially it was sporadic but eventually, the unit wouldn't start. The unit is about 2.5 years old.

I searched on the web and found information, on this and other boards, about solving this issue by replacing the ECS sensor, main PCB, and case brake. After an over $400 repair estimate I did the replacements myself. I discovered my model does not have the ECS sensor but a Thermistor which I replaced along with the circuit board and case brake. Now the unit starts up fine, runs thru a wash cycle but will not drain. The drain pump sounds like it running but no water comes out and the unit eventually goes back to displaying the over-level water error. If I then turn the unit off it will turn itself back on displaying the error lights.

I have drained the unit and inspected the drain pump and hoses. The pump looks OK visually and the hoses are clear. Everything else seems to be fine visually.

Any ideas? Should I Just throw in the towel and replace?

Thanks in advance

Offline martwjc

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Re: Over-level water error Samsung DW80F600UTS/AA 01
« Reply #1 on: August 23, 2017, 05:51:48 PM »
I have been through the initial phase of the very same problem.  However, after reading the many other posts (and attached documents) on this forum I have only replaced the thermistor.  For me troubleshooting (partly with onboard diagnostic modes) showed case brake, overfill sensor, and main PCB were all fine.  The supposedly failed thermistor showed a 48 Kohm (via three multi-meters) reading at room temperature which did not make sense for a 3.3Kohm (description of the part confirmed by Samsung) thermistor.  First cycle with a new thermistor did complete but again after reading the posts, many times a problem re-occurs.  My concern regarding re-occurrence is that out of the three new thermistors (from two suppliers) I ended up with (asked for replacements because assumed they were defective) all reported 44-46 Kohms instead of the expected 3.3Kohms at room temperature.  I took the lowest resistance 44.6 for my replacement part.  However, something is very wrong with this part.  Either Samsung made a change on the fly to a 45Kohm thermistor, all of the four parts really are defective, or the thermistor functions unlike any I have seen before (i.e. rated resistance s a not given near room temp.).  I wonder if people have been checking the new thermistors when they replace.  Have you?

Offline martwjc

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Re: Over-level water error Samsung DW80F600UTS/AA 01
« Reply #2 on: September 02, 2017, 12:04:39 PM »
Update:  New, but apparently defective thermistor (DD32-00005A) sensor seems to be having an effect since now it will run the normal wash cycle without error but there is still water in the bottom after cycle.  I have been through all of the drain diagnostics in the service modes and no physical blockage anywhere.  Also, a manual drain after end of cycle does the trick.  I still believe that the thermistor is at fault despite being new. This lack of drainage seems like a common complaint as well.  Since last post I received one last thermistor sensor (my original order) that was literally  lost in mail (FedEx to USPS debacle).  This one had a lower resistance than any of the other four so I have now installed this sensor to see if we can complete the cycle and drain the tub completely.  I will likely take one of my four sensors housings and attempt to produce a true 3.3 kohm thermistor.

Offline Pressthis

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Re: Over-level water error Samsung DW80F600UTS/AA 01
« Reply #3 on: November 18, 2017, 01:22:06 PM »
I was getting the same error flashing smart auto & heavy lights. After watching the the unit cycle with a flashlight on the case break assembly it was clear I was getting a false overfill situation. Tore the case break off the unit and blew out all the fluid chambers. Then blew out the hose connected to the overall sensor on the bottom right of the case break. Ran another cycle and another overfill shut down and the flashing lights again. I could clearly see the overfill chamber overfilling with a flashlight behind it when the unit was cycling. Was just about ready to throw in the towel when I got a wild air and decided to tear the pump apart inside the bottom of the unit. There are a couple of vent holes one of which was clogged with junk (paper labels and other crap) cleaned the pump up (caked on grease) put it all back together and wala runs like a champ? Obviously the vent holes have something to do with the barametric pressure on the overfill chamber. Bottom line nothing wrong with case break, or sensors, the pump assembly just needed a good cleaning after 3 years!

Offline dougm52

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  • Member Since: Nov 2017
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Re: Over-level water error Samsung DW80F600UTS/AA 01
« Reply #4 on: November 30, 2017, 01:26:44 PM »
I started getting this error.  Unit is about 3 years old.  Great info on the board.  I pulled the filter and cleaned the innards leading to the pump.  I pulled the pump and checked the ports.  Looked pretty good.  No impeller damage.  Then pulled the brake assembly.  Found a corroded screw on the pump side wedged in the channel.  Pried the screw out.  Cleaned the brake flow paths as much as possible and flushed with garden hose.  I found out quite by accident that the A/s-Hose Drain IN;F800,P between the pump and brake assy contains a check valve.  Clicks like the old auto PVC valves between section and pressure.  Cleaned the drain hose out with garden nozzle to make sure the valve was not dirty and sticking partially closed.  Now running a delicate wash to see if anything changed.  So far so good.  But others have claimed the problem to be intermittent at first,  If this one finishes, I'm going to run a vinegar wash with the unit empty hoping that will clean the flow paths I can't see before I shove it back under the counter.  Dirty wet fingers crossed.