Lennox 87F16 Limit Control
The Lennox 87F16 Limit Control is a critical safety component designed for precise thermal management in residential and commercial heating systems. This 140F limit switch acts as a primary stilt-mounted high-limit safety, engineered to interrupt the electrical circuit if internal plenum temperatures exceed the 140-degree Fahrenheit threshold. By preventing the heat exchanger from reaching unsafe temperatures due to restricted airflow or blower failure, this part protects the equipment from structural damage and hazardous operating conditions. The Lennox 87F1601 is a direct, identical replacement for the 87F16, ensuring seamless HVAC part compatibility across a wide range of Lennox 80MGF and 80MGF2 series units. As a veteran-grade fixed temperature limit control, it features a standardized 2.8" overall length (OAL) and a SPST-N.O. configuration that resets at 110-degrees Fahrenheit. Integrating this OEM Lennox furnace limit switch restores the furnace's factory safety sequence, ensuring the system shuts down and the blower remains active during an over-temperature event to dissipate residual heat.
Key Benefits for the Contractor- Precise 140°F Actuation: Provides a reliable cut-off point to prevent heat exchanger cracking and thermal stress on internal components.
- Universal Lennox Compatibility: Replaces both 87F16 and 87F1601, reducing truck stock requirements for common 80% AFUE furnace repairs.
- Durable Stilt-Mount Design: Features a white sleeve and robust 2.8" probe for accurate temperature sensing within the plenum airflow.
- Automatic Reset Logic: The switch resets once the temperature drops to 110°F, allowing the system to resume normal operation after the underlying airflow issue is resolved.
- Why does my Lennox furnace keep tripping the high limit? This is usually caused by restricted airflow. Check for a dirty 16x25x1 filter, blocked return air grilles, or a failing blower motor capacitor that is reducing RPMs.
- Can I swap the 87F16 with a higher temperature limit? No. Using a limit switch with a higher temperature rating than the manufacturer's specification can lead to heat exchanger failure or a fire hazard. Always match the 140F rating for this specific Lennox application.
- How do I test the 87F16 for continuity? With the power off and wires disconnected, use a multimeter on the ohms setting. At room temperature, the switch should show continuity (closed circuit); if it shows an open circuit when cool, the internal bimetal disc is defective.
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: $32.18
-65%$32.18
$11.26Lennox 87F16 Limit Control
The Lennox 87F16 Limit Control is a critical safety component designed for precise thermal management in residential and commercial heating systems. This 140F limit switch acts as a primary stilt-mounted high-limit safety, engineered to interrupt the electrical circuit if internal plenum temperatures exceed the 140-degree Fahrenheit threshold. By preventing the heat exchanger from reaching unsafe temperatures due to restricted airflow or blower failure, this part protects the equipment from structural damage and hazardous operating conditions. The Lennox 87F1601 is a direct, identical replacement for the 87F16, ensuring seamless HVAC part compatibility across a wide range of Lennox 80MGF and 80MGF2 series units. As a veteran-grade fixed temperature limit control, it features a standardized 2.8" overall length (OAL) and a SPST-N.O. configuration that resets at 110-degrees Fahrenheit. Integrating this OEM Lennox furnace limit switch restores the furnace's factory safety sequence, ensuring the system shuts down and the blower remains active during an over-temperature event to dissipate residual heat.
Key Benefits for the Contractor- Precise 140°F Actuation: Provides a reliable cut-off point to prevent heat exchanger cracking and thermal stress on internal components.
- Universal Lennox Compatibility: Replaces both 87F16 and 87F1601, reducing truck stock requirements for common 80% AFUE furnace repairs.
- Durable Stilt-Mount Design: Features a white sleeve and robust 2.8" probe for accurate temperature sensing within the plenum airflow.
- Automatic Reset Logic: The switch resets once the temperature drops to 110°F, allowing the system to resume normal operation after the underlying airflow issue is resolved.
- Why does my Lennox furnace keep tripping the high limit? This is usually caused by restricted airflow. Check for a dirty 16x25x1 filter, blocked return air grilles, or a failing blower motor capacitor that is reducing RPMs.
- Can I swap the 87F16 with a higher temperature limit? No. Using a limit switch with a higher temperature rating than the manufacturer's specification can lead to heat exchanger failure or a fire hazard. Always match the 140F rating for this specific Lennox application.
- How do I test the 87F16 for continuity? With the power off and wires disconnected, use a multimeter on the ohms setting. At room temperature, the switch should show continuity (closed circuit); if it shows an open circuit when cool, the internal bimetal disc is defective.
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 87F16 Limit Control is a critical safety component designed for precise thermal management in residential and commercial heating systems. This 140F limit switch acts as a primary stilt-mounted high-limit safety, engineered to interrupt the electrical circuit if internal plenum temperatures exceed the 140-degree Fahrenheit threshold. By preventing the heat exchanger from reaching unsafe temperatures due to restricted airflow or blower failure, this part protects the equipment from structural damage and hazardous operating conditions. The Lennox 87F1601 is a direct, identical replacement for the 87F16, ensuring seamless HVAC part compatibility across a wide range of Lennox 80MGF and 80MGF2 series units. As a veteran-grade fixed temperature limit control, it features a standardized 2.8" overall length (OAL) and a SPST-N.O. configuration that resets at 110-degrees Fahrenheit. Integrating this OEM Lennox furnace limit switch restores the furnace's factory safety sequence, ensuring the system shuts down and the blower remains active during an over-temperature event to dissipate residual heat.
Key Benefits for the Contractor- Precise 140°F Actuation: Provides a reliable cut-off point to prevent heat exchanger cracking and thermal stress on internal components.
- Universal Lennox Compatibility: Replaces both 87F16 and 87F1601, reducing truck stock requirements for common 80% AFUE furnace repairs.
- Durable Stilt-Mount Design: Features a white sleeve and robust 2.8" probe for accurate temperature sensing within the plenum airflow.
- Automatic Reset Logic: The switch resets once the temperature drops to 110°F, allowing the system to resume normal operation after the underlying airflow issue is resolved.
- Why does my Lennox furnace keep tripping the high limit? This is usually caused by restricted airflow. Check for a dirty 16x25x1 filter, blocked return air grilles, or a failing blower motor capacitor that is reducing RPMs.
- Can I swap the 87F16 with a higher temperature limit? No. Using a limit switch with a higher temperature rating than the manufacturer's specification can lead to heat exchanger failure or a fire hazard. Always match the 140F rating for this specific Lennox application.
- How do I test the 87F16 for continuity? With the power off and wires disconnected, use a multimeter on the ohms setting. At room temperature, the switch should show continuity (closed circuit); if it shows an open circuit when cool, the internal bimetal disc is defective.
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.
