Lennox 10M80 Limit Switch
The Lennox 10M80 is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This high temperature limit switch operates as a normally closed contact that opens when internal plenum temperatures reach the designated safety threshold. Featuring a 100-140F AUTO reset configuration, this sensor is engineered to interrupt the heating circuit should the unit exceed safe operating temperatures, preventing heat exchanger damage. As a genuine Lennox replacement part, it ensures high-performance reliability for technicians performing emergency furnace repairs. The L140-40F specification indicates the switch opens at 140 degrees Fahrenheit and automatically resets when the temperature drops by 40 degrees, returning the system to standard operation. This HVAC limit control is built with a standard two-pin terminal layout for quick field installation and is compatible with a wide range of Lennox G series and Dave Lennox Signature Collection furnaces.
Key Benefits for Technicians:- Precision Calibration: Factory-set at 140°F to ensure immediate response to overheating conditions.
- Automatic Reset: Eliminates unnecessary service calls by self-resetting once the temperature differential is met.
- OEM Compatibility: Guaranteed fit for Lennox 10M80, 10M8001, and select Armstrong or AirEase equipment.
- Durable Construction: Built to withstand high-cycling thermal environments in high-efficiency furnaces.
What causes this limit switch to trip frequently?
Technicians should check for restricted airflow, typically caused by a dirty air filter, blocked return air grilles, or a failing blower motor.
Can this part replace a manual reset limit switch?
No. This is an automatic reset limit switch. Replacing a manual reset safety with an automatic reset can create a hazardous condition; always match the exact OEM specifications.
How do I verify the operation of the 10M80?
Perform a continuity test across the terminals while the switch is cool. A lack of continuity at room temperature indicates a failed open sensor that requires replacement.
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: $37.00
-65%$37.00
$12.95Lennox 10M80 Limit Switch
The Lennox 10M80 is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This high temperature limit switch operates as a normally closed contact that opens when internal plenum temperatures reach the designated safety threshold. Featuring a 100-140F AUTO reset configuration, this sensor is engineered to interrupt the heating circuit should the unit exceed safe operating temperatures, preventing heat exchanger damage. As a genuine Lennox replacement part, it ensures high-performance reliability for technicians performing emergency furnace repairs. The L140-40F specification indicates the switch opens at 140 degrees Fahrenheit and automatically resets when the temperature drops by 40 degrees, returning the system to standard operation. This HVAC limit control is built with a standard two-pin terminal layout for quick field installation and is compatible with a wide range of Lennox G series and Dave Lennox Signature Collection furnaces.
Key Benefits for Technicians:- Precision Calibration: Factory-set at 140°F to ensure immediate response to overheating conditions.
- Automatic Reset: Eliminates unnecessary service calls by self-resetting once the temperature differential is met.
- OEM Compatibility: Guaranteed fit for Lennox 10M80, 10M8001, and select Armstrong or AirEase equipment.
- Durable Construction: Built to withstand high-cycling thermal environments in high-efficiency furnaces.
What causes this limit switch to trip frequently?
Technicians should check for restricted airflow, typically caused by a dirty air filter, blocked return air grilles, or a failing blower motor.
Can this part replace a manual reset limit switch?
No. This is an automatic reset limit switch. Replacing a manual reset safety with an automatic reset can create a hazardous condition; always match the exact OEM specifications.
How do I verify the operation of the 10M80?
Perform a continuity test across the terminals while the switch is cool. A lack of continuity at room temperature indicates a failed open sensor that requires replacement.
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 10M80 is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This high temperature limit switch operates as a normally closed contact that opens when internal plenum temperatures reach the designated safety threshold. Featuring a 100-140F AUTO reset configuration, this sensor is engineered to interrupt the heating circuit should the unit exceed safe operating temperatures, preventing heat exchanger damage. As a genuine Lennox replacement part, it ensures high-performance reliability for technicians performing emergency furnace repairs. The L140-40F specification indicates the switch opens at 140 degrees Fahrenheit and automatically resets when the temperature drops by 40 degrees, returning the system to standard operation. This HVAC limit control is built with a standard two-pin terminal layout for quick field installation and is compatible with a wide range of Lennox G series and Dave Lennox Signature Collection furnaces.
Key Benefits for Technicians:- Precision Calibration: Factory-set at 140°F to ensure immediate response to overheating conditions.
- Automatic Reset: Eliminates unnecessary service calls by self-resetting once the temperature differential is met.
- OEM Compatibility: Guaranteed fit for Lennox 10M80, 10M8001, and select Armstrong or AirEase equipment.
- Durable Construction: Built to withstand high-cycling thermal environments in high-efficiency furnaces.
What causes this limit switch to trip frequently?
Technicians should check for restricted airflow, typically caused by a dirty air filter, blocked return air grilles, or a failing blower motor.
Can this part replace a manual reset limit switch?
No. This is an automatic reset limit switch. Replacing a manual reset safety with an automatic reset can create a hazardous condition; always match the exact OEM specifications.
How do I verify the operation of the 10M80?
Perform a continuity test across the terminals while the switch is cool. A lack of continuity at room temperature indicates a failed open sensor that requires replacement.
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.
