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The Lennox Control-Limit L240-210F is a vital safety component for residential and commercial heating systems. This high-limit control switch, also known as a fan disc sensor, is designed to monitor the temperature within your furnace's heat exchanger. It acts as a primary safety mechanism by automatically breaking the electrical circuit if the system exceeds a safe operating temperature of 240°F, preventing potential overheating and equipment damage. Once the unit cools down to 210°F, the switch resets, allowing the furnace to resume normal operation. Essential for maintaining both safety and efficiency, this durable limit switch is a common replacement part for furnaces that are short-cycling or failing to stay ignited due to thermal safety triggers.
Type: High Limit Control Switch
Size: Standard fan disc size
Application: Heating and HVAC systems, specifically oil and gas furnaces requiring a thermal safety cut-off switch.
Specifications: Cut-out temperature: 240°F; Cut-in temperature: 210°F; Configuration: Normally Closed (NC); Function: Automatic Reset.