Lennox 36K28 Limit Switch
The Lennox 36K28 is a critical safety component designed for precise thermal regulation within residential and light commercial Lennox furnace systems. This automatic limit switch is engineered to monitor heat exchanger temperatures, effectively interrupting the burner circuit if internal conditions exceed the safety threshold. Operating with a fixed range of 160-190°F, it provides a vital fail-safe against overheating caused by restricted airflow or blower motor failure. As a direct OEM replacement part, this switch is a one-to-one match for the 40154B017, ensuring seamless integration into existing control logic without requiring field modifications. Professional technicians rely on this L190-30 limit control for its high-cycle reliability and accurate "auto-reset" functionality, which restores system operation once temperatures return to a safe 160°F. Maintaining the integrity of the safety string is paramount for equipment longevity and combustion safety; utilizing a genuine Lennox 36K28 Limit Switch guarantees that your high-efficiency heating system operates within its engineered parameters.
Key Benefits- Precise Thermal Protection: Specifically calibrated to trip at 190°F, preventing heat exchanger damage and ensuring safe HVAC system operation.
- OEM Compatibility: Identical to industry part numbers 40154B017 and 36K2801, facilitating rapid "drop-in" service for Lennox, Armstrong, and Ducane equipment.
- Automatic Reset Logic: The auto limit switch feature eliminates the need for manual intervention, resetting the circuit once the plenum cools to 160°F.
- Durable Construction: Built to withstand the high-temperature environment of a gas furnace vestibule, maintaining consistent continuity over thousands of cycles.
- Is the Lennox 36K28 an automatic or manual reset switch? This is an automatic reset limit switch. It will close the circuit once the temperature drops below the differential (160°F), unlike manual switches which require a physical reset button press.
- Can I use this to replace a 40154B017 switch? Yes, the 36K28 is the exact technical replacement for the 40154B017 and is used extensively across multiple Allied Air brands.
- What causes this limit switch to trip repeatedly? Frequent tripping is usually indicative of low airflow, often caused by a dirty air filter, blocked returns, or a failing blower motor, rather than a faulty switch itself.
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: $112.75
-65%$112.75
$39.46Lennox 36K28 Limit Switch
The Lennox 36K28 is a critical safety component designed for precise thermal regulation within residential and light commercial Lennox furnace systems. This automatic limit switch is engineered to monitor heat exchanger temperatures, effectively interrupting the burner circuit if internal conditions exceed the safety threshold. Operating with a fixed range of 160-190°F, it provides a vital fail-safe against overheating caused by restricted airflow or blower motor failure. As a direct OEM replacement part, this switch is a one-to-one match for the 40154B017, ensuring seamless integration into existing control logic without requiring field modifications. Professional technicians rely on this L190-30 limit control for its high-cycle reliability and accurate "auto-reset" functionality, which restores system operation once temperatures return to a safe 160°F. Maintaining the integrity of the safety string is paramount for equipment longevity and combustion safety; utilizing a genuine Lennox 36K28 Limit Switch guarantees that your high-efficiency heating system operates within its engineered parameters.
Key Benefits- Precise Thermal Protection: Specifically calibrated to trip at 190°F, preventing heat exchanger damage and ensuring safe HVAC system operation.
- OEM Compatibility: Identical to industry part numbers 40154B017 and 36K2801, facilitating rapid "drop-in" service for Lennox, Armstrong, and Ducane equipment.
- Automatic Reset Logic: The auto limit switch feature eliminates the need for manual intervention, resetting the circuit once the plenum cools to 160°F.
- Durable Construction: Built to withstand the high-temperature environment of a gas furnace vestibule, maintaining consistent continuity over thousands of cycles.
- Is the Lennox 36K28 an automatic or manual reset switch? This is an automatic reset limit switch. It will close the circuit once the temperature drops below the differential (160°F), unlike manual switches which require a physical reset button press.
- Can I use this to replace a 40154B017 switch? Yes, the 36K28 is the exact technical replacement for the 40154B017 and is used extensively across multiple Allied Air brands.
- What causes this limit switch to trip repeatedly? Frequent tripping is usually indicative of low airflow, often caused by a dirty air filter, blocked returns, or a failing blower motor, rather than a faulty switch itself.
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 36K28 is a critical safety component designed for precise thermal regulation within residential and light commercial Lennox furnace systems. This automatic limit switch is engineered to monitor heat exchanger temperatures, effectively interrupting the burner circuit if internal conditions exceed the safety threshold. Operating with a fixed range of 160-190°F, it provides a vital fail-safe against overheating caused by restricted airflow or blower motor failure. As a direct OEM replacement part, this switch is a one-to-one match for the 40154B017, ensuring seamless integration into existing control logic without requiring field modifications. Professional technicians rely on this L190-30 limit control for its high-cycle reliability and accurate "auto-reset" functionality, which restores system operation once temperatures return to a safe 160°F. Maintaining the integrity of the safety string is paramount for equipment longevity and combustion safety; utilizing a genuine Lennox 36K28 Limit Switch guarantees that your high-efficiency heating system operates within its engineered parameters.
Key Benefits- Precise Thermal Protection: Specifically calibrated to trip at 190°F, preventing heat exchanger damage and ensuring safe HVAC system operation.
- OEM Compatibility: Identical to industry part numbers 40154B017 and 36K2801, facilitating rapid "drop-in" service for Lennox, Armstrong, and Ducane equipment.
- Automatic Reset Logic: The auto limit switch feature eliminates the need for manual intervention, resetting the circuit once the plenum cools to 160°F.
- Durable Construction: Built to withstand the high-temperature environment of a gas furnace vestibule, maintaining consistent continuity over thousands of cycles.
- Is the Lennox 36K28 an automatic or manual reset switch? This is an automatic reset limit switch. It will close the circuit once the temperature drops below the differential (160°F), unlike manual switches which require a physical reset button press.
- Can I use this to replace a 40154B017 switch? Yes, the 36K28 is the exact technical replacement for the 40154B017 and is used extensively across multiple Allied Air brands.
- What causes this limit switch to trip repeatedly? Frequent tripping is usually indicative of low airflow, often caused by a dirty air filter, blocked returns, or a failing blower motor, rather than a faulty switch itself.
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.
