What is the Wrinkle guard process and how long does it last?

Wrinkle guard process starts after the drying process is finished to prevent laundry from getting wrinkled if you do not take the laundry out in time. The process lasts about 30 minutes, during which '0:00' will be displayed in the time display and the 'o' symbol will be displayed as the status symbol. You can press any button or rotate the programme selector to terminate this process, after which the door will be released and laundry can be taken out. (Page 19)