Lennox 60M58 Limit Switch
The Lennox 60M58 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This L195-40F auto-reset switch is engineered to monitor heat exchanger temperatures, effectively preventing overheating by opening the circuit at a fixed temperature of 195 degrees Fahrenheit and closing once it cools by a 40-degree differential. As a genuine Lennox OEM replacement part, it ensures exact fitment and maintains the original integrity of the furnace’s safety string, preventing common mechanical failures associated with aftermarket universal alternatives. This furnace high limit switch features a standard flange mount for secure installation and utilizes 1/4-inch male spade terminals for high-conductivity electrical connections. It is frequently utilized across a wide range of G24, G32, and G40 series units. Proper diagnostic verification involves testing for continuity across the terminals when the system is cool to ensure the thermal limit control remains closed during normal operation.
Technical Integration and Key Benefits- Precise Thermal Calibration: Calibrated to trigger at 195°F with a 40°F reset differential to protect the heat exchanger from thermal stress.
- OEM Compatibility: Replaces Lennox 60M5801 and older 60M58 models, ensuring seamless integration with the existing control board and wiring harness.
- Automatic Reset Functionality: Re-engages the heating circuit automatically once temperatures return to a safe operating range, reducing unnecessary system lockdowns.
- Durable Construction: Built with high-grade bimetal sensing elements to withstand frequent thermal cycling in high-demand HVAC environments.
What causes a Lennox 60M58 limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, often caused by a heavily loaded air filter, blocked return air vents, or a failing blower motor. If the switch remains open after the unit cools, the internal bimetal disc may be fatigued, requiring a full replacement.
Can I test this switch with a multimeter?
Yes, under normal ambient temperatures, the switch should show 0 ohms (continuity). If the circuit is open at room temperature, the switch is defective. During an over-temp event, the switch should open the 24V circuit to the gas valve immediately.
Is the 60M58 interchangeable with other L195-40 switches?
While the temperature ratings may match, using the Lennox 60M58 ensures the physical dimensions, probe length, and mounting orientation align perfectly with the furnace's airflow path for accurate sensing.
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: $12.60
-65%$12.60
$4.41Lennox 60M58 Limit Switch
The Lennox 60M58 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This L195-40F auto-reset switch is engineered to monitor heat exchanger temperatures, effectively preventing overheating by opening the circuit at a fixed temperature of 195 degrees Fahrenheit and closing once it cools by a 40-degree differential. As a genuine Lennox OEM replacement part, it ensures exact fitment and maintains the original integrity of the furnace’s safety string, preventing common mechanical failures associated with aftermarket universal alternatives. This furnace high limit switch features a standard flange mount for secure installation and utilizes 1/4-inch male spade terminals for high-conductivity electrical connections. It is frequently utilized across a wide range of G24, G32, and G40 series units. Proper diagnostic verification involves testing for continuity across the terminals when the system is cool to ensure the thermal limit control remains closed during normal operation.
Technical Integration and Key Benefits- Precise Thermal Calibration: Calibrated to trigger at 195°F with a 40°F reset differential to protect the heat exchanger from thermal stress.
- OEM Compatibility: Replaces Lennox 60M5801 and older 60M58 models, ensuring seamless integration with the existing control board and wiring harness.
- Automatic Reset Functionality: Re-engages the heating circuit automatically once temperatures return to a safe operating range, reducing unnecessary system lockdowns.
- Durable Construction: Built with high-grade bimetal sensing elements to withstand frequent thermal cycling in high-demand HVAC environments.
What causes a Lennox 60M58 limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, often caused by a heavily loaded air filter, blocked return air vents, or a failing blower motor. If the switch remains open after the unit cools, the internal bimetal disc may be fatigued, requiring a full replacement.
Can I test this switch with a multimeter?
Yes, under normal ambient temperatures, the switch should show 0 ohms (continuity). If the circuit is open at room temperature, the switch is defective. During an over-temp event, the switch should open the 24V circuit to the gas valve immediately.
Is the 60M58 interchangeable with other L195-40 switches?
While the temperature ratings may match, using the Lennox 60M58 ensures the physical dimensions, probe length, and mounting orientation align perfectly with the furnace's airflow path for accurate sensing.
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 60M58 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This L195-40F auto-reset switch is engineered to monitor heat exchanger temperatures, effectively preventing overheating by opening the circuit at a fixed temperature of 195 degrees Fahrenheit and closing once it cools by a 40-degree differential. As a genuine Lennox OEM replacement part, it ensures exact fitment and maintains the original integrity of the furnace’s safety string, preventing common mechanical failures associated with aftermarket universal alternatives. This furnace high limit switch features a standard flange mount for secure installation and utilizes 1/4-inch male spade terminals for high-conductivity electrical connections. It is frequently utilized across a wide range of G24, G32, and G40 series units. Proper diagnostic verification involves testing for continuity across the terminals when the system is cool to ensure the thermal limit control remains closed during normal operation.
Technical Integration and Key Benefits- Precise Thermal Calibration: Calibrated to trigger at 195°F with a 40°F reset differential to protect the heat exchanger from thermal stress.
- OEM Compatibility: Replaces Lennox 60M5801 and older 60M58 models, ensuring seamless integration with the existing control board and wiring harness.
- Automatic Reset Functionality: Re-engages the heating circuit automatically once temperatures return to a safe operating range, reducing unnecessary system lockdowns.
- Durable Construction: Built with high-grade bimetal sensing elements to withstand frequent thermal cycling in high-demand HVAC environments.
What causes a Lennox 60M58 limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, often caused by a heavily loaded air filter, blocked return air vents, or a failing blower motor. If the switch remains open after the unit cools, the internal bimetal disc may be fatigued, requiring a full replacement.
Can I test this switch with a multimeter?
Yes, under normal ambient temperatures, the switch should show 0 ohms (continuity). If the circuit is open at room temperature, the switch is defective. During an over-temp event, the switch should open the 24V circuit to the gas valve immediately.
Is the 60M58 interchangeable with other L195-40 switches?
While the temperature ratings may match, using the Lennox 60M58 ensures the physical dimensions, probe length, and mounting orientation align perfectly with the furnace's airflow path for accurate sensing.
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.
