Hi, Recently, the Bosch started to leave a white residue (mostly on plastic). There have been no changes to our city water supply or plumbing. We use Cascade powder detergent and we are in the middle of the box so there has been no change there and we haven't changed the amount we use (about 1/3 to 1/2 of the dispenser).

I set the dishwasher on its high temperature wash setting and opened it during the wash cycle. The temperature of the water measured about 150 degrees (F) so it seems to be heating OK.

Any Suggestions? Where would you recommend I look first?

Thanks!!