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Repair and disassembly guides and support for dish washing appliances.

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Why is my dishwasher not washing or drying very well?

I have an issue with a Kenmore model- 665.13003n511 (seems like an awfully long model number). It does not heat up very well. I have already replaced the heating element (This part was actually bad, and was starting to get some corrosion on it), and it is still not cleaning or drying well. I do use a drying agent with it. Does anyone have any ideas on how I can fix this, or where I can start next? TIA!

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Hi @imbob218 ,

Check that the dishwasher’s hot water supply is 120 deg. F (49 deg. C) at the dishwasher. (see p.6 of the installation manual)

The heater element only raises the temperature by some 40 deg. F maximum (see p.16 of the user manual for the different temperatures used by the different wash cycles).

If the supply is not hot enough then the heater may not be able to bring it up to the required temperature.

Update (03/07/2021)

Hi @imbob218

According to this supplier the manufacturer’s part number for the tech sheet is Tech Sheet - W10849767 - Rev A.

Scroll down to p.5 and find the Water Heating/Heat Dry and Water Sensing with O.W.I. Sensor (Water/Air/Soil/Temperature) circuit.

On p.6-7 it shows how to get into the Diagnostics, what the error codes mean if any shown and what to look for, for each error code.

Hopefully between using the two you will find the problem

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I do have about 12 ft of hose running off of the hot water supply (under the sink).. But, I do not think this is the problem, because I did not always have this issue.



Have you checked the water temperature if only to eliminate it as a possible cause? The problem may just have started and it may have nothing to do with the length of the hose but something affecting the temp of the water coming through the hose. e.g. faulty water heater etc. It may be hard to judge a drop in water temp of say 20-30 F by just feeling it but this may be enough to affect the performance of the dishwasher.

As i said it is only to eliminate it from the equation


@jayeff I have not yet. Looks like I will be doing that tomorrow too!


Temperature at the water supply is 120F.


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The thermostat is the other component that can commonly cause your dishwasher to not heat the water. The job of the thermostat is to regulate the water temperature throughout a wash program. If it’s faulty then the dishwasher won’t “know” when to turn the heating element on and off to keep the water at the required temperature.

Just like the heating element, you can test the thermostat using a multimeter to determine whether or not it is the source of the fault. Luckily it’s a very cheap part if you need to replace it, the only real difficulty is getting access to it as you’ll find it underneath the dishwasher.

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On a good note, my dishwasher is not inside of my cabinetry and it is very easy to get to!!!! I will for sure try to check this out.

I purchased a multi-meter from Walmart a few weeks ago and attempted to get the reading over the weekend but I was having trouble timing the cycle when the element and the thermostat.. I should have enough time after work tomorrow to try to test it again, but if i run short i will for sure be testing it on Saturday.



Any tips on doing this?


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