While you wait for answers, we may have found some information which could help you.
Click here for Cleaning Despite ArmsWhy is my SMEG Dishwasher showing E1 without water in tray?
How to install new knob for smeg dishwasher Type 10028; mod:?
Simpson Silencio 850 Dishwasher?
How to switch on beep on BEKO dishwasher?
How to fix Kenwood Slimline Dishwasher KDW45X20 with a F1 Er?
K8D45517?