Thank you for the model number.
Please try this to solve the issue:
You will have to unplug the appliance and remove the bottom front flap.
Then keep some beach towels and shallow container under the filter.
Now, rotate the drain pump filter anti clockwise to open, clean it completely and make sure it is not clogged.
Also with your fingers check if impellor rotates, then reconnect everything and plug it back.
Press and hold the START button for around 10 seconds to unlock the control.
Then try any program and it should work.
Please let me know if you need me to clarify anything or if you have any additional questions-I am happy to help!
I hope you enjoyed your experience with Justanswer UK today.
Have a wonderful day.