Having problems with your Whirlpool GU2400XTP Built-in Dishwasher ?

Dishwasher leaving gritty residue in the dishwasher and on the di

\015 No clue about dishwashers. We pre rinse the dished in the sink but still get gritty residue. The dishwasher came with the house and I can't find a manual on line. Model number is mdb5600aww it's a Maytag Quiet Series 100. where are these filters that may need cleaning? Any help would be appreciated.\015

Answers :

You may have a defective "flapper valve". Look at a diagram/parts list. It is a $3 part and the installation is simple. The "flapper valve" serves as a check valve to prevent the drain water from flowing through the spray arms when the DW is emptying to the drain. The drain water has a lot of particulate matter from the dishes. Mine was stuck open with a long strip of hard soap scale. I probably could have reused the existing valve and just cleaned it. I believe the problem was caused by using the cheap DW detergent from Sams Club rather than the more expensive name brand. It had a tendency to build up a hard white crust that wouldn't dissolve. I replaced the flapper valve and cleaned the spray bars, and changed detergents. It cleans like new.
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