Hi @alanodonohoe,
Don't know AEG products but try checking for any [https://www.youtube.com/watch?v=96x4TUUyeJ4|error codes] as they may give an idea what's going on.
Unfortunately I can't find out how to decipher them as yet but have found a [https://zestplan.com/help-and-advice/diagnosis-and-fault-codes/aeg-dishwasher-error-codes-a-complete-guide/|list of codes] that may help if there is a code