I have a jenn air gas stove and when I was making dinner the display looked almost steamed up and cloudy. The numbers got clear again but then it started locking and unlocking- it doesn’t have a lock feature I think it only uses this when self cleaning. Eventually it showed an f9 error and shut off. I tried cooking again and same thing. Thankfully my chicken was done. I ready to reset the breaker but I’m wondering if this range may be on its way out. It came with our home built in 2001 so I’m assuming it’s from around then.
F9 code is indicative of a bad door latch relay. I think the stove is just on its last legs based on its age. Time to start researching a replacement. One day that chicken will get locked in there! I’m glad it made it out this time.