Amana AO27SE is an electric wall oven with self-cleaning feature and a solid state timer that allows you to program and control all timing functions. It has two controls — a thermostat dial and a selector dial. These must both be set for the oven to operate. The thermostat dial can be set for the oven temperature desired from WARM to BROIL. The selector dial has two positions: “MANUAL — Use for baking, roasting, broiling and oven meals. Bake and broil elements heat. “CLEAN and “TIMED BAKE" — Use “TIMED BAKE” for automatic operation controlled by the clock.