Hello dear helper, we have a Whirlpool Gold GU1200XTLB2 built in dishwasher. The dishes do not clean on a normal cycle and sometimes on the pots and pans cycle. Is there a maintenance which needs to be done periodically? If yes, what do I need to do and where do I find the instructions for this task. Your help is greatly appreciated. Petra

SOURCE: The only number on the nameplate of my

Yes, you almost certainly have a Whirlpool Gold Quiet Partner III Model #8575637
Of course the great news with buying from Costco is the ability to return products you are dissatisfied with. Check with the customer service desk.
Please reply if you want to to get into repairing it and we will get under way.

SOURCE: We have the Whirlpool Gold quiet partner III

Make sure your water is hot, at least 120deg f. Also, use least amount of soap you can get away with. Usually around 2 tablespoons for soft water. Use powdered soap not gel. Gel leaves a tiny residue each load and will clog up plumbing in dw after 4,5,or 6 years. Rinse agent such as Jet Dry is highly recommended.

Try the "Tang" trick. Orange Tang drink mix is mildly acidic. With an empty dishwasher, start and fill, then normal drain. On second fill, add a full jar of Tang then let the dishwasher run for a few minutes. Crack the door to stop the dishwasher and let it sit for several hours or overnight. Then close the door, push start and let the dw run through the remaining cycle. This will sometimes clean out the crud in the water lines.

Hope this helps! Ken

SOURCE: leaving chalk or soap on the dishes

Hi,
Check your heating element..

Dishwasher Problems The Heating Element not Working
http://www.fixya.com/support/r4589033-dishwasher_problems_heating_element_not

Dishwasher Maintenance
http://www.fixya.com/support/r4319937-dishwasher_maintenance

heatman101

SOURCE: Whirlpool Gold dishwasher not cleaning

I had a similar problem with my last two dishwashers, with food still left on the dishes at the end of the cycle. What a nightmare. The most recent dishwasher is new, now the problem is solved. Here's what the manufacturer told me. Pour white vinegar (approximately 2 cups) into the dishwasher and run through the cycle. Buy some Cascade Complete and only use this type of soap for the dishwasher. Make sure you run a cup or two of the white vinegar through the dishwasher cycle once a week. My dishes are now clean and clear!!

SOURCE: The sprayer on the roof

I'd look at the "spray holes" on the sprayer to ensure no clogs.
Next, ensure tube at the back (if I'm thinking of the correct model) of the top shelf meets with the spout sticking out of the baqck wall of the washer.