Arctic Spas® offers one of the most technologically advanced and user-friendly topside control units. Engineered to perform in every season, the digital temperature display has solid state accuracy. Besides fingertip temperature control, the topside control unit oversees diagnostics, flow switch failure, over-heat protection and freeze protection. Heat and filtration cycles are all programmable. The self-diagnostic feature of the controls allows for easy servicing of the spa. In many cases our service technicians can isolate and solve problems right over the telephone.