Any clothes in it?
It looks to sense the dampness of items in there, if no clothes or small load in it maybe not contacting sensor bars, therefore sensor drying function shuts off too early. Try it on timed drying..
Water level full detected will also shut it off after short time.
Thanks for your reply, unfortunately it does this with a full load, and seems to be pumping water into the drawer. Have noticed sometimes if I switch the buzzer off it will work ok 😥