The Power Saver mode works with the 8800 Controller to determine whether to run in single-stage or cascade mode, depending on temperature setpoint and cooling throttle. If the setpoint is lower than -20°C or the throttle is more than 80%, the controller will switch the chamber to cascade mode. If the setpoint is above -20°C, and the throttle is less than -10%, the system will switch to Power Saver single-stage mode. When running in single-stage mode, the chamber decreases the amount of energy needed to run, reducing energy costs.