Lennox 46K07 Limit Switch
The Lennox 46K07 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. Engineered as a L185-20F fixed temperature control, this genuine Lennox replacement part ensures the burner circuit opens if internal plenum temperatures reach 185°F, preventing heat exchanger damage and potential fire hazards. The switch is designed to automatically reset once temperatures drop by a 20°F differential, restoring normal HVAC system operation without manual intervention. Featuring a standard flange mount configuration and 1/4 inch quick-connect terminals, the 46K07 limit control allows for rapid field installation and secure electrical continuity. This furnace high limit switch is compatible with a wide range of G24, G32, and G41 series units, maintaining the exact calibrated setpoints required for OEM HVAC performance and safety compliance. Reliable thermal cycling is essential for protecting the blower motor and maintaining airflow integrity across the heat exchanger.
Technical Specifications and Benefits
- Precise Thermal Calibration: Opens at 185°F (85°C) and closes at 165°F to maintain safe operating parameters.
- OEM Compatibility: Direct replacement for Lennox 46K07 and 100438-03, ensuring proper fitment in the furnace cabinet.
- Durable Construction: Built to withstand high-temperature environments and frequent cycling without drifting from factory specifications.
- Standardized Connectivity: Utilizes spade terminal connectors for a secure, low-resistance interface with the control board wiring harness.
Common Installation Questions
Is the 46K07 a manual or automatic reset switch?
This is an automatic reset limit switch. It will close the circuit once the temperature falls below the 20-degree differential, allowing the furnace to resume operation once the over-temperature condition is cleared.
What causes this limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, often caused by a dirty air filter, blocked return vents, or a failing blower motor. Ensure the system is operating within the specified static pressure limits.
Can I use a higher temperature limit switch if this one keeps tripping?
No. You must use the L185-20F specification indicated by the manufacturer to ensure the heat exchanger does not exceed its design temperature limits.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $12.01
-65%$12.01
$4.20Lennox 46K07 Limit Switch
The Lennox 46K07 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. Engineered as a L185-20F fixed temperature control, this genuine Lennox replacement part ensures the burner circuit opens if internal plenum temperatures reach 185°F, preventing heat exchanger damage and potential fire hazards. The switch is designed to automatically reset once temperatures drop by a 20°F differential, restoring normal HVAC system operation without manual intervention. Featuring a standard flange mount configuration and 1/4 inch quick-connect terminals, the 46K07 limit control allows for rapid field installation and secure electrical continuity. This furnace high limit switch is compatible with a wide range of G24, G32, and G41 series units, maintaining the exact calibrated setpoints required for OEM HVAC performance and safety compliance. Reliable thermal cycling is essential for protecting the blower motor and maintaining airflow integrity across the heat exchanger.
Technical Specifications and Benefits
- Precise Thermal Calibration: Opens at 185°F (85°C) and closes at 165°F to maintain safe operating parameters.
- OEM Compatibility: Direct replacement for Lennox 46K07 and 100438-03, ensuring proper fitment in the furnace cabinet.
- Durable Construction: Built to withstand high-temperature environments and frequent cycling without drifting from factory specifications.
- Standardized Connectivity: Utilizes spade terminal connectors for a secure, low-resistance interface with the control board wiring harness.
Common Installation Questions
Is the 46K07 a manual or automatic reset switch?
This is an automatic reset limit switch. It will close the circuit once the temperature falls below the 20-degree differential, allowing the furnace to resume operation once the over-temperature condition is cleared.
What causes this limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, often caused by a dirty air filter, blocked return vents, or a failing blower motor. Ensure the system is operating within the specified static pressure limits.
Can I use a higher temperature limit switch if this one keeps tripping?
No. You must use the L185-20F specification indicated by the manufacturer to ensure the heat exchanger does not exceed its design temperature limits.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Lennox 46K07 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. Engineered as a L185-20F fixed temperature control, this genuine Lennox replacement part ensures the burner circuit opens if internal plenum temperatures reach 185°F, preventing heat exchanger damage and potential fire hazards. The switch is designed to automatically reset once temperatures drop by a 20°F differential, restoring normal HVAC system operation without manual intervention. Featuring a standard flange mount configuration and 1/4 inch quick-connect terminals, the 46K07 limit control allows for rapid field installation and secure electrical continuity. This furnace high limit switch is compatible with a wide range of G24, G32, and G41 series units, maintaining the exact calibrated setpoints required for OEM HVAC performance and safety compliance. Reliable thermal cycling is essential for protecting the blower motor and maintaining airflow integrity across the heat exchanger.
Technical Specifications and Benefits
- Precise Thermal Calibration: Opens at 185°F (85°C) and closes at 165°F to maintain safe operating parameters.
- OEM Compatibility: Direct replacement for Lennox 46K07 and 100438-03, ensuring proper fitment in the furnace cabinet.
- Durable Construction: Built to withstand high-temperature environments and frequent cycling without drifting from factory specifications.
- Standardized Connectivity: Utilizes spade terminal connectors for a secure, low-resistance interface with the control board wiring harness.
Common Installation Questions
Is the 46K07 a manual or automatic reset switch?
This is an automatic reset limit switch. It will close the circuit once the temperature falls below the 20-degree differential, allowing the furnace to resume operation once the over-temperature condition is cleared.
What causes this limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, often caused by a dirty air filter, blocked return vents, or a failing blower motor. Ensure the system is operating within the specified static pressure limits.
Can I use a higher temperature limit switch if this one keeps tripping?
No. You must use the L185-20F specification indicated by the manufacturer to ensure the heat exchanger does not exceed its design temperature limits.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
