I recently had the same problem that many on this forum have encountered. The display on the Double oven went blank. The inside light continued to work and the oven would beep. The oven is not used very frequently and the self clean feature has never been used. From the information on this forum, it was pointing me in the direction that the control board needed to be replaced (part no. 8302319. I purchased this part from APP.com and installed it over the weekend. Initially, it appeared that it had fixed the problem. The display now works, programming seems to be working fine etc. I tested the upper oven, and it appears to be working as designed (heats up, pre-heats, keypad functions....) When I attempted to test the lower oven, the keypad appeared to be functioning by allowing me to set the temp, and the timer began counting down during the pre-heat cycle. I left the room and when I returned, the oven beeped alerting me that the lower oven had finished pre-heating (set point 350 degrees). I opened the door and the oven was not producing any heat. Clearly the pre-heat function is a timed program rather than an actual temperature. I am curious, is it possible that the Control board I purchased was defective (for the lower oven portion), and if not what are some other suspects that I should be looking for and or their replacement parts. Up until this event occurred, everything worked as designed with the oven with no indication of immeninent failure. If the control panel is defective, how do I go about returning/replacing it?? Any advice would be appreciated.

How do you "program the cavity size"? I am not familiar with this process

Shows how to do it on the tech sheet.
I believe it is actually the oven size re: a 30 inch oven would be a 30 cavity size, 27 inch a 27 cavity size etc.