While you wait for answers, we may have found some information which could help you.
Click here for Checked Not Heat DishwasherWhy is my SMEG Dishwasher showing E1 without water in tray?
How to fix Kenwood Slimline Dishwasher KDW45X20 with a F1 Er?
How can I mend my Zanussi ZDLN1512 dishwasher?
Why is dishwasher not fully drained of water?
K8D45517?
Which way up is the upper spray arm - with holes uppermost o?