120-658

The York/ETC High Limit Control Switch is a vital safety component designed for residential and commercial heating systems. This fan disc-style switch acts as a thermal safeguard for your furnace or air handler, monitoring internal temperatures to prevent overheating. Engineered to open the electrical circuit when the system reaches 230°F, it effectively shuts down the heating element to protect the appliance from damage and ensure home safety. Once the temperature drops by the 30°F differential, the switch resets, allowing the unit to resume normal operation. If your furnace is short-cycling or failing to heat, a worn-out limit switch may be the cause. This high-quality replacement part ensures your HVAC system maintains peak efficiency and reliable temperature regulation.
Type: Fan Disc High Limit Control Switch
Size: Standard small-format thermal disc
Application: Used primarily as a safety cut-out in gas furnaces, electric heaters, and air handling units to prevent heat exchanger damage.
Specifications: Opening Temperature: 230°F; Closing Temperature: 200°F (30°F differential); Automatic reset; Two-terminal connection.