York Limit Switch F Auto Reset

York auto reset furnace limit switches, also called high limit switches, limit controls or limit thermostats, are safety controls for gas furnaces and other HVAC heating equipment. They monitor temperature inside the furnace. If the furnace overheats, the switch opens the circuit and shuts off the burners. This helps protect the heat exchanger and other internal components.

Key Features:

• Automatic reset operation: After the furnace cools to a safe temperature, the switch closes on its own and normal operation can resume. No manual reset button is needed.
• Overheat protection: The switch cuts off the burner when airflow is restricted, such as by a dirty filter, a failing blower or blocked ducts. This helps prevent damage and unsafe conditions.
• Temperature-rated design: Each switch has fixed open and close temperature points. These are marked with an "L" code followed by the cut-out temperature in degrees F.
• Direct replacement: Built to restore the original safety function of York furnace limit controls.
• Simple installation: A typical swap involves disconnecting power, removing the old switch, and attaching the wires to the new one.

Choose the individual part number that matches the open/close temperature and mounting style of your original limit switch. Check this against the markings on the switch you are replacing. Always shut off power before servicing furnace controls.