During the baking process the oven will begin to beep randomly. The beeping will start and then suddenly end. This will happen multiple times throughout the baking process. The beeping will start out as the normal beeping sound, much like when the timer beeps. There will be a few beeps and then the beeping proceeds to become quieter and then it stops, only to start up later in the baking process. Finally, we have never received any error code on the display.