While you wait for answers, we may have found some information which could help you.
Click here for Dishwasher House ManualHotpoint Aquarius FDW20 diswasher?
How to fix Kenwood Slimline Dishwasher KDW45X20 with a F1 Er?
Simpson Silencio 850 Dishwasher?
K8D45517?
Clear E1 error code on smeg dishwasher with no water or leak?
How to install new knob for smeg dishwasher Type 10028; mod:?