Model Number: WED9600TW1
Brand: Whirlpool
Age: 1-5 years

All of a sudden my dryer won't progress while set on automatic cycle. It won't stop until I open the door. It was working for almost three hours last night, although the cycle was supposed to take only 40 min. The clothes were totally dry.
It works fine on manual cycle and shuts of when's done.

I have cleaned the moisture sensor, but it haven't seemed to help
Any advice?
Thank you!