Do Dishwasher in "autoclean" mode know if it needs another rinse?

[mark_wpduet]

OR... is that just for food particles? In other words, does the machine know if there are traces of soap left and add another rinse? If so, would this be true with all dishwashers that have an autoclean cycle?

 

[johnb300m]

Typically, no, at least not any of the American dishwasher brands.
The way sensor cycles typically work is they sense low, medium or high soil. And those each have a set cycle sequence. So it’s possible the medium and/or high soil settings will have one or two added post-rinses.

 

[henene4]

If it has an optical sensor, there's really nothing stopping it from doing so.


Though, it's not directly sensing for any detergent residue.
Keep in mind that with dishes, you have a high amount of soil in a small amount of water AND dishes don't really retain much water from step to step. Some, but compared to what laundry would hold as a percentage of water in the machine vs water in/on the items, a very small amount.

And most of the turbidity would probably come from any soil suspended & emulsified into the water, not the detergent itself.
So, if there is something retaining more water than usual and/or that water has a particularly high amount of soil in it, that's probably what would trigger another interim rinse.


I know that Vestel and Bosch do use the optical sensor in the first interim rinse to check.
I don't think Mieles G5000/G7000 design does, I think that just goes off of load size and soil level.

 

[vacerator]

The only reason I can imagine an extra rinse would be needed is if you were washing a light wash load with only two rinses, and put detergent in both dispensers. Otherwise full cycles like normal, heavy, cookware or anti-bacterial all have 3 if not 4 rinses.