Samsung DMT300 RFW/XAA. Low water level code


Samsung DMT300 RFW/XAA. Low water level code

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Jeremie
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Hello everyone,

I have a problem with my dishwasher (DMT300 RFW / XAA). I can not do washing cycles anymore ... When I start it, it starts to fill with water, but stops a few moments later. I have error code displayed water level too low.

I started doing some checking, but I can not pinpoint the problem. I checked my float to make sure it was clean and unobstructed. I also tested the position sensor of the float and the circuit works well. After reading the dishwasher manual, in the troubleshooting section. It is written that if the float and position sensor are good, the main power board assembly (PBA) must be changed. Before embarking on this rather expensive change of parts, I'd like to validate my verification process with you to make sure nothing escapes me. I would not want to make a purchase that is not necessary and above all non refundable ...

Thank you so much!

Jeremie
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Hello,

Thank you for posting. On the float, did you actually open the float sensor box? or does it look like that would maybe break it? the reason I ask is because many times gunk can build up in those on some models causing it to give off a false reason.. not sure if that is the case but I have heard this one a few times and on similar models.



Jeremie
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Hello,

Yes, I opened the float sensor box. It was super clean and free of gunk. I read couple article about this recurring problem on my model, except not in my case.

Thank you for this suggestion Smile





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Yes it is however most of the time its that switch.. it could still be faulty I guess and something is sending that message to the control board... can you confirm when you start your dishwasher that the water coming in is hot?





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Hi again,

Yes it is. It take a few seconds and the water is hot and ready for the cycle.
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Ok thanks for that info.. so we are looking at a defective float switch or possibly a faulty control board ... there is still a lot of conflicting info out there on this model so I am hesitant to say for sure what it is.





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Hello,

As I started my dishwasher the other day to check about the water temperature. The dishwasher did the complete cycle without error code. Also, my float sensor box is spotless. As I may have a intermittent problem. I thinking about changing my position switch on the float at first because it's cheaper. If the problem persist, I will go for the main power board assembly ($$$). Furthermore, I don't think my temp sensor in this situation is faulty. If it was, I would have received a temp sensor error code. Tell me what you think of my reasoning.

Many thanks for the awesome support you gave me so far!

Jeremie




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I agree with your reasoning. The thing is appliances are about 15 years behind automobiles and they have not yet adapted enough technology where the main computer can tell you with certainty what is failing. The float sensor is a common issue with these, perhaps more common than the control board so it may be the best way to find out by changing the less expensive part first and hope that takes care of it. I read on some tech forums where the inlet valve not allowing hot water in could trigger the same error but that seemed to be a pretty rare occurrence. Hopefully it is not the main control board so keep us posted if you can and thank you for visiting the appliance repair forum!








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