Question about Whirlpool 24 in. DU1050SS Built-in Dishwasher
..which indicates a heating problem. I've ran hot water before starting the dishwasher. I've reset using the keypad dance sequence. Still trips over to the flashing clean light. After I've reset the machine & opened the door, the dishes appear to be wet - and the water appears to be only warm/borderline hot - not as hot as I'd like to think would be necessary to clean dishes. I'm not sure what to test first.. I'm guessing the heating element - but I'm not sure where it's at or what to do to test it. After browsing the net, I've seen various Kenmore model 665 owners reporting the same problem with several of the repairs ending up being with their motors or with their keypads, which is worrisome to say the least.
Cmattson, This problem has been a real pain for owners of this model as well as us techs who repair them. There are a lot of things to check to get to the right problem. First, the water entering the dishwasher should be no less than 120 degrees. During the first 8 minutes of the initial wash cycle, the heater should be on. You can check this by dropping the toe panel and doing some tests. The element will be in the rear, so it can be difficult to get at unless you can pull the unit out some. Make sure the wires to the heating element are on. With a meter, you should be able to verify that the heater is receiving 120V during the first 8 minutes. The main board monitors the thermistor to see if there has been a rise of 4 degrees with water that enters below 110 degrees and 2 degrees with water that enters above 110 degrees. If it does not see this, it will drain and flash the clean light. The element itself should ohm out at 10 to 35 ohms. Other things you might have to check; The heater runs on the nuetral side of the door switch so you want to make sure the d/w is level and the door is closing properly. If the left door switch is not making contact, the element will not heat. Make sure all the harnesses are on tight on the control board. I have found in most of my calls on this problem it was a faulty heater. I've only had one case of a faulty thermistor. Best of luck on this..
Posted on Jun 10, 2006
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It may be an
issue with heater circuit, door switch or wash pump, please reset the power to
the dishwasher. After, 5 minutes check if you are still getting the same error.
If yes, then it is a water heating fault. To resolve this error try pressing
this reset sequence-- Heat Dry - Normal - Heat Dry - Normal or High Temp - Air
Dry - High Temp - Air Dry or Hi Temp Scrub, energy saver dry, Hi Temp Scrub,
energy saver dry. Now let the unit run for 2-3 minutes and then you press
the Cancel/Drain button and allow it to completely drain and reset. If this
doesn't work then it's an issue with the wash pump not pumping the water past
the heater efficiently or due to lack of water to heat. Please make sure that
heater is not open circuited and is heating the water efficiently. You'll have
to check the heater using a multimeter; the meter should read between 3000 to
3300 ohms (Use multimeter on Rx1 ohm setting). If heater is fine then make sure
water pressure is optimum and fill valve is working fine. Hope this helps...
Please post back if you need more information.
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