You did not provide the make and model number but most of the new machines have a depressed area called a sump that accumulates the sediment from cleaning and filters it out. If this is not cleaned by hand regularly, the debris can be sprayed back on the dishes.
SOURCE: dishwasher leaves residue in top rack only
Most cleaning problems are caused by the dishwasher not getting enough water. It could be cause of the switch level, which control water level in the tub. The switch level is usually a diaphragm device with a small clear tube attached between the switch and the bottom of the washer's outer tub. I am not familiar with your machine, but if you will open the rear panel you will find it easily. Be aware you should discoonect the power cable !!! Clear the tube (attached between the switch and the bottom of the washer's outer tub) from any obstruction.In case it will not solve the problem, you should replace the switch. Good luck !
SOURCE: Bosch HydroSensor Dishwasher (SGS5342GB/17) -
Hi Julie,
The sprayer arms may need replacing.
SOURCE: Bosch dishwasher
Although I previously posted with the same problem of a film on the dishes after cleaning, I did find a section in the owner's manual which solved my problem. Lift up the rinse aid cap on the inside door - the factory setting is on "4". The rinse aid works in conjunction with your local water, which has variations in it's hardness or softness. When your dishes are streaky, lower the rinse aid setting to 1 or 2. If your dishes are spotted, raise the rinse aid setting higher.
SOURCE: My dishwasher is leaving gritty, sandy particles
Dishwashers have a part usually called a separator or accumulator which traps the dirt from the water during the wash cycles while the water is continuously recycled to clean the dishes. At the end of the cycle the separator is flushed out and the trapped dirt goes down the drain. If it doesn't get flushed out the dirt builds up till it starts showing up on the dishes. Some separators have a hole on top and one on bottom with a valve which stops up one hole or the other depending which cycle it's running. The valve can be stuck or broken causing the problem.
SOURCE: dishwasher leaving gritty residue in the dishwasher and on the di
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.
The problem is hard water leaving those spots. www.dishwasherfilter.com has a product to solve this problem once and for all. It filters the water going into your dishwasher and removes the hard minerals that leave those spots. It is very affordable and even has a money back guarantee. You will love the way your dishes look with this product.
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