What is the maximum time setting for the Pressure Cook function? August 13, 2021 09:40 With the Duo Series, you can set the Pressure Cook function for a maximum of 4 hours. Related articles What is the maximum time setting for the Slow Cook function? Can one deep fry in the Instant Pot? Can I adjust my settings after cooking has started? What do the different pressure settings mean? How does the Slow Cook function work in comparison to a slow cooker?