It does not rinse properly, leaving a film on

Fixya had one suggestion a number of years ago:

Quoting:

Jamie Nye

I took Brett's advice and went straight to the run capacitor, this was in a DeDietrich, showing d06 fault. Machine is fixed and running within 48 hours without leaving the kitchen, thanks Brett.
Posted on Aug 20, 2016

http://www.fixya.com/support/t12442822-de_dietrich_d06



Quoting from a Dietrich dishwasher manual:

"high pump flow fault"
https://cdn.shopify.com/s/files/1/1599/8433/files/DETRICH_DVH1150J.pdf

I have a De Dietrich DVH938JI1 dishwasher with error code D06, the dishwasher on start would first drain the tub then fill the tub with fresh water, the next step would be the washing cycle where the recirculation pump kicks in to start the sprayers, this is when the dishwasher stops and gives code D06, i took Brett's advice and went straight to the recirculation pump motor capacitor, replaced it and the dishwasher was back working with no issues.

Reduce detergent quantity. Check the rinse aid dispenser and fill if required..

Finally check your inlet water free flow to the machine. If the strainer is blocked clean the part.

The problem is hard water. Go to www.dishwasherfilter.com. They have a new product out that solves this problem once and for all. It filters the water entering your dishwasher and removes the hard minerals that cause these spots. Very affordable and guaranteed to leave your dishes looking amazing every time.

are you using rinse aid?

Make sure you are using rinse aid like jet dry. All newwer dishwasher are made to only work properly with this in it.

Sounds like no rinse-aid.

WAS IT IN A CERTAIN CYLE WHEN FUSE BLEW

I suggest you get all your staff to search tirelessly for an answer, ChrissyJ!