Lennox 11W52 Limit Switch
The Lennox 11W52 Limit Switch is a critical safety component engineered for precision thermal monitoring in high-efficiency HVAC systems. This L240-30F limit control is designed to open the electrical circuit at a fixed temperature of 240°F and automatically reset once the temperature drops by a 30°F differential. Built to handle the rigorous duty cycles of commercial and residential furnaces, this switch ensures the blower motor and heat exchanger operate within safe thermal parameters. As a direct OEM Lennox replacement part, it guarantees correct fitment and electrical compatibility, preventing nuisance trips and protecting the heat exchanger from cracks caused by overheating. Whether you are performing a furnace limit switch replacement or troubleshooting intermittent burner shutdowns, this sensor provides the reliability required for 24V and 120V control circuits.
Technical Features and Benefits:- Fixed Temperature Calibration: Precision-set to 240°F (L240) to prevent thermal runaway.
- Automatic Reset Function: Resumes normal operation after a 30°F temperature drop.
- Durable Construction: High-grade ceramic or phenolic housing designed for high-heat environments.
- Versatile Compatibility: Fits a wide range of Lennox G-Series and Elite units.
- Direct OEM Fit: Ensures proper probe depth and mounting alignment for accurate airflow sensing.
What are the symptoms of a failing Lennox 11W52 limit switch?
A faulty switch typically causes the furnace to short cycle or the indoor blower to run continuously while the burners fail to ignite. If the contacts are stuck open, the control board will often throw a specific flash code indicating an open limit circuit.
Can I use a higher temperature limit switch instead of this L240-30F?
No. You must always match the L-rating specified by the manufacturer. Installing a switch with a higher limit can lead to hazardous operation and potential heat exchanger failure.
Is the 11W52 compatible with 24V control systems?
Yes, this switch is designed to integrate seamlessly with standard 24V furnace control boards and safety strings.
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: $10.62
-65%$10.62
$3.72Lennox 11W52 Limit Switch
The Lennox 11W52 Limit Switch is a critical safety component engineered for precision thermal monitoring in high-efficiency HVAC systems. This L240-30F limit control is designed to open the electrical circuit at a fixed temperature of 240°F and automatically reset once the temperature drops by a 30°F differential. Built to handle the rigorous duty cycles of commercial and residential furnaces, this switch ensures the blower motor and heat exchanger operate within safe thermal parameters. As a direct OEM Lennox replacement part, it guarantees correct fitment and electrical compatibility, preventing nuisance trips and protecting the heat exchanger from cracks caused by overheating. Whether you are performing a furnace limit switch replacement or troubleshooting intermittent burner shutdowns, this sensor provides the reliability required for 24V and 120V control circuits.
Technical Features and Benefits:- Fixed Temperature Calibration: Precision-set to 240°F (L240) to prevent thermal runaway.
- Automatic Reset Function: Resumes normal operation after a 30°F temperature drop.
- Durable Construction: High-grade ceramic or phenolic housing designed for high-heat environments.
- Versatile Compatibility: Fits a wide range of Lennox G-Series and Elite units.
- Direct OEM Fit: Ensures proper probe depth and mounting alignment for accurate airflow sensing.
What are the symptoms of a failing Lennox 11W52 limit switch?
A faulty switch typically causes the furnace to short cycle or the indoor blower to run continuously while the burners fail to ignite. If the contacts are stuck open, the control board will often throw a specific flash code indicating an open limit circuit.
Can I use a higher temperature limit switch instead of this L240-30F?
No. You must always match the L-rating specified by the manufacturer. Installing a switch with a higher limit can lead to hazardous operation and potential heat exchanger failure.
Is the 11W52 compatible with 24V control systems?
Yes, this switch is designed to integrate seamlessly with standard 24V furnace control boards and safety strings.
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
Shipping & Returns
Shipping & Returns
Description
The Lennox 11W52 Limit Switch is a critical safety component engineered for precision thermal monitoring in high-efficiency HVAC systems. This L240-30F limit control is designed to open the electrical circuit at a fixed temperature of 240°F and automatically reset once the temperature drops by a 30°F differential. Built to handle the rigorous duty cycles of commercial and residential furnaces, this switch ensures the blower motor and heat exchanger operate within safe thermal parameters. As a direct OEM Lennox replacement part, it guarantees correct fitment and electrical compatibility, preventing nuisance trips and protecting the heat exchanger from cracks caused by overheating. Whether you are performing a furnace limit switch replacement or troubleshooting intermittent burner shutdowns, this sensor provides the reliability required for 24V and 120V control circuits.
Technical Features and Benefits:- Fixed Temperature Calibration: Precision-set to 240°F (L240) to prevent thermal runaway.
- Automatic Reset Function: Resumes normal operation after a 30°F temperature drop.
- Durable Construction: High-grade ceramic or phenolic housing designed for high-heat environments.
- Versatile Compatibility: Fits a wide range of Lennox G-Series and Elite units.
- Direct OEM Fit: Ensures proper probe depth and mounting alignment for accurate airflow sensing.
What are the symptoms of a failing Lennox 11W52 limit switch?
A faulty switch typically causes the furnace to short cycle or the indoor blower to run continuously while the burners fail to ignite. If the contacts are stuck open, the control board will often throw a specific flash code indicating an open limit circuit.
Can I use a higher temperature limit switch instead of this L240-30F?
No. You must always match the L-rating specified by the manufacturer. Installing a switch with a higher limit can lead to hazardous operation and potential heat exchanger failure.
Is the 11W52 compatible with 24V control systems?
Yes, this switch is designed to integrate seamlessly with standard 24V furnace control boards and safety strings.
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.
