I have a DV209A dryer. In timed modes and in sensor modes, the dryer will heat up and dry the clothes then cool down. It just continues to spin after cooling down. The screen displays 1 min left but never counts down from 1 min.
I have tried resetting the breaker after 10 min and the same symptom happened.
I unplugged the dryer for 10 minutes and plugged it back in. it counted down to 1 min and continue to spin until I pressed the power button.
Unlike some of the other issues I read in the community, Mine does cool off after drying. Also, it doesn't spin just because the door is shut. you have to press start.
Hey, give this link a shot: https://www.samsung.com/us/support/troubleshooting/TSG01001990/ If this does not help I recommend letting a service technician have a look. Send your full model code and serial number via private message to get started.