How many bleeps? Are any lights flashing? Which one and how man times?
This may be a good starting poimt:
https://www.ukwhitegoods.co.uk/forums/forum/public-support-forums/help-and-support/dishwasher-help-forum/44068-ignis-adl348-why-me
https://www.ukwhitegoods.co.uk/forums/forum/public-support-forums/help-and-support/dishwasher-help-forum/35545-ignis-adl348-3-flashes-control-board-or-ntc
You could always post on there
Amazing what a quick G**gle will turn up, July 2019