Description
The York S1-3110-3321 System Switch is a control component used to select operating modes in control panels and air handling units. It provides manual control of system operation, such as fans or heating, by routing electrical signals within the control circuit. It is used in residential and commercial furnace and air-handling assemblies in HVAC systems to enable user input for system mode selection. Within the control panel, it supports proper operation of the equipment by directing electrical flow to the appropriate circuits during system use and service conditions.
