That dial had 4 cycles on it--normal, light, rinse&dry, and plate warmer. That "one" pushbutton was actually a rocker switch. If you think this was boring, all Frigidaire Spin-Tube models ONLY had a dial and that was it. The last series of Frigidaire (GM-Prduced) dishwashers were the only ones with any true "pizzaz" with regards to control panels and buttons.