Lennox 87062 Limit Switch
The Lennox 87062 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial HVAC systems. This 130-170F auto reset limit switch functions as a high-temperature cutout, opening the electrical circuit if the furnace heat exchanger reaches 170°F and automatically closing once the temperature drops to 130°F. Engineered for Lennox furnace repair and maintenance, this L3-40 thermal switch ensures the blower motor and heat exchanger operate within safe thermal tolerances, preventing equipment damage and hazardous conditions. When diagnosing furnace limit switch tripping, technicians should verify airflow across the coil, as this SPST (Single Pole Single Throw) switch is a primary defense against restricted ductwork or failed indoor blower motors. This OEM-spec Lennox replacement part ensures exact calibration and terminal alignment for seamless integration into existing control circuits, maintaining the structural integrity of the furnace's safety string.
Technical Specifications and Benefits:
- Precise Thermal Calibration: 170°F Open and 130°F Close (L170-40) allows for tight control of plenum temperatures.
- Automatic Reset Functionality: Restores circuit continuity automatically once the system cools, reducing unnecessary service calls for manual resets.
- OEM Compatibility: Specifically engineered for Lennox 87062 applications, ensuring proper fitment and electrical load handling.
- Durable Construction: Built to withstand the high-cycle demands of modern high-efficiency furnaces and air handlers.
Common Installation and Troubleshooting Questions:
How do I test a Lennox 87062 Limit Switch?
Using a multimeter set to continuity, check the terminals while the switch is cool; it should show a closed circuit. If the switch remains open at room temperature, the internal bimetal disc has failed and requires replacement.
What causes this limit switch to trip repeatedly?
Frequent tripping is usually indicative of airflow restrictions, such as a clogged HVAC air filter, a dirty evaporator coil, or a failing blower motor capacitor. Ensure static pressure is within manufacturer specs before assuming the switch is faulty.
Can I use a universal limit switch instead of the Lennox 87062?
While universal switches exist, using the 87062 OEM limit switch is recommended to ensure the temperature setpoints and physical insertion depth match the original engineering specifications for the heat exchanger.
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: $8.70
-65%$8.70
$3.04Lennox 87062 Limit Switch
The Lennox 87062 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial HVAC systems. This 130-170F auto reset limit switch functions as a high-temperature cutout, opening the electrical circuit if the furnace heat exchanger reaches 170°F and automatically closing once the temperature drops to 130°F. Engineered for Lennox furnace repair and maintenance, this L3-40 thermal switch ensures the blower motor and heat exchanger operate within safe thermal tolerances, preventing equipment damage and hazardous conditions. When diagnosing furnace limit switch tripping, technicians should verify airflow across the coil, as this SPST (Single Pole Single Throw) switch is a primary defense against restricted ductwork or failed indoor blower motors. This OEM-spec Lennox replacement part ensures exact calibration and terminal alignment for seamless integration into existing control circuits, maintaining the structural integrity of the furnace's safety string.
Technical Specifications and Benefits:
- Precise Thermal Calibration: 170°F Open and 130°F Close (L170-40) allows for tight control of plenum temperatures.
- Automatic Reset Functionality: Restores circuit continuity automatically once the system cools, reducing unnecessary service calls for manual resets.
- OEM Compatibility: Specifically engineered for Lennox 87062 applications, ensuring proper fitment and electrical load handling.
- Durable Construction: Built to withstand the high-cycle demands of modern high-efficiency furnaces and air handlers.
Common Installation and Troubleshooting Questions:
How do I test a Lennox 87062 Limit Switch?
Using a multimeter set to continuity, check the terminals while the switch is cool; it should show a closed circuit. If the switch remains open at room temperature, the internal bimetal disc has failed and requires replacement.
What causes this limit switch to trip repeatedly?
Frequent tripping is usually indicative of airflow restrictions, such as a clogged HVAC air filter, a dirty evaporator coil, or a failing blower motor capacitor. Ensure static pressure is within manufacturer specs before assuming the switch is faulty.
Can I use a universal limit switch instead of the Lennox 87062?
While universal switches exist, using the 87062 OEM limit switch is recommended to ensure the temperature setpoints and physical insertion depth match the original engineering specifications for the heat exchanger.
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.
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Description
The Lennox 87062 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial HVAC systems. This 130-170F auto reset limit switch functions as a high-temperature cutout, opening the electrical circuit if the furnace heat exchanger reaches 170°F and automatically closing once the temperature drops to 130°F. Engineered for Lennox furnace repair and maintenance, this L3-40 thermal switch ensures the blower motor and heat exchanger operate within safe thermal tolerances, preventing equipment damage and hazardous conditions. When diagnosing furnace limit switch tripping, technicians should verify airflow across the coil, as this SPST (Single Pole Single Throw) switch is a primary defense against restricted ductwork or failed indoor blower motors. This OEM-spec Lennox replacement part ensures exact calibration and terminal alignment for seamless integration into existing control circuits, maintaining the structural integrity of the furnace's safety string.
Technical Specifications and Benefits:
- Precise Thermal Calibration: 170°F Open and 130°F Close (L170-40) allows for tight control of plenum temperatures.
- Automatic Reset Functionality: Restores circuit continuity automatically once the system cools, reducing unnecessary service calls for manual resets.
- OEM Compatibility: Specifically engineered for Lennox 87062 applications, ensuring proper fitment and electrical load handling.
- Durable Construction: Built to withstand the high-cycle demands of modern high-efficiency furnaces and air handlers.
Common Installation and Troubleshooting Questions:
How do I test a Lennox 87062 Limit Switch?
Using a multimeter set to continuity, check the terminals while the switch is cool; it should show a closed circuit. If the switch remains open at room temperature, the internal bimetal disc has failed and requires replacement.
What causes this limit switch to trip repeatedly?
Frequent tripping is usually indicative of airflow restrictions, such as a clogged HVAC air filter, a dirty evaporator coil, or a failing blower motor capacitor. Ensure static pressure is within manufacturer specs before assuming the switch is faulty.
Can I use a universal limit switch instead of the Lennox 87062?
While universal switches exist, using the 87062 OEM limit switch is recommended to ensure the temperature setpoints and physical insertion depth match the original engineering specifications for the heat exchanger.
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.
