The controller’s system status and setup information displays on an LCD UI. The status indicator icons show the defrost, cooling, evaporator fan, and alarm features and provide a visual indication of the system status and alarms. The defrost and alarm icons also function as keys to initiate unscheduled defrost cycles and clear system alarms. You can use four touchpad keys to navigate the system, see detailed system information, change parameter settings, and respond to system alarms.