
Heil Quaker ICP 1173741 Limit Switch
When you're out on a service call and finding that a furnace is short-cycling or hitting a hard lockout, the Heil Quaker ICP 1173741 Limit Switch is a critical diagnostic point. This genuine OEM HVAC replacement part is engineered specifically for International Comfort Products (ICP) equipment, functioning as a high-limit safety control that monitors the internal heat exchanger temperature. The switch is rated with an Op195 Cl115 specification, meaning it is designed to open on rise at 195°F to break the burner circuit and automatically close at 115°F once the system has sufficiently cooled. Using a furnace high limit switch with these exact set points is vital for maintaining the manufacturer's airflow and safety parameters. As a SPST (Single Pole Single Throw) component, it provides reliable continuity during normal operation. Professionals should always verify Heil furnace parts compatibility by checking the model number to ensure this L195-40 limit control matches the system's requirements for thermal protection and operational safety.
Key Benefits- Precision Thermal Monitoring: High-accuracy 195-degree open temperature prevents heat exchanger damage during restricted airflow events.
- Automatic Reset Function: The internal bi-metal disc triggers a reset at 115°F, allowing the system to resume normal heating cycles without manual intervention once cooled.
- OEM Standards: Built to the exact electrical and physical specifications of ICP heating systems, ensuring a drop-in fit and proper terminal alignment.
- Essential Safety Component: Acts as the primary fail-safe against blower motor failure or clogged internal filters that lead to overheating.
What causes this limit switch to trip repeatedly?
In most cases, a tripped limit switch is the result of insufficient airflow. Check for a clogged air filter, blocked return air grilles, or a failing blower motor. If the airflow is confirmed to be within spec but the switch still opens below 195°F, the internal bi-metal disc may have fatigued, necessitating a replacement.
Is the 1173741 limit switch compatible with all Heil furnaces?
While this part is common across many Heil, Quaker, and Tempstar units, it is specific to the Op195 Cl115 temperature rating. Always cross-reference your specific model number, as using a switch with an incorrect temperature rating can lead to premature tripping or dangerous overheating conditions.
How do I test if this switch is defective?
With the power disconnected and the wires removed, use a multimeter to check for continuity across the terminals. At room temperature, the switch should be closed (show continuity). If it shows an open circuit while cold, the component has failed and must be replaced.
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: $154.14
-65%$154.14
$53.95Heil Quaker ICP 1173741 Limit Switch
When you're out on a service call and finding that a furnace is short-cycling or hitting a hard lockout, the Heil Quaker ICP 1173741 Limit Switch is a critical diagnostic point. This genuine OEM HVAC replacement part is engineered specifically for International Comfort Products (ICP) equipment, functioning as a high-limit safety control that monitors the internal heat exchanger temperature. The switch is rated with an Op195 Cl115 specification, meaning it is designed to open on rise at 195°F to break the burner circuit and automatically close at 115°F once the system has sufficiently cooled. Using a furnace high limit switch with these exact set points is vital for maintaining the manufacturer's airflow and safety parameters. As a SPST (Single Pole Single Throw) component, it provides reliable continuity during normal operation. Professionals should always verify Heil furnace parts compatibility by checking the model number to ensure this L195-40 limit control matches the system's requirements for thermal protection and operational safety.
Key Benefits- Precision Thermal Monitoring: High-accuracy 195-degree open temperature prevents heat exchanger damage during restricted airflow events.
- Automatic Reset Function: The internal bi-metal disc triggers a reset at 115°F, allowing the system to resume normal heating cycles without manual intervention once cooled.
- OEM Standards: Built to the exact electrical and physical specifications of ICP heating systems, ensuring a drop-in fit and proper terminal alignment.
- Essential Safety Component: Acts as the primary fail-safe against blower motor failure or clogged internal filters that lead to overheating.
What causes this limit switch to trip repeatedly?
In most cases, a tripped limit switch is the result of insufficient airflow. Check for a clogged air filter, blocked return air grilles, or a failing blower motor. If the airflow is confirmed to be within spec but the switch still opens below 195°F, the internal bi-metal disc may have fatigued, necessitating a replacement.
Is the 1173741 limit switch compatible with all Heil furnaces?
While this part is common across many Heil, Quaker, and Tempstar units, it is specific to the Op195 Cl115 temperature rating. Always cross-reference your specific model number, as using a switch with an incorrect temperature rating can lead to premature tripping or dangerous overheating conditions.
How do I test if this switch is defective?
With the power disconnected and the wires removed, use a multimeter to check for continuity across the terminals. At room temperature, the switch should be closed (show continuity). If it shows an open circuit while cold, the component has failed and must be replaced.
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
When you're out on a service call and finding that a furnace is short-cycling or hitting a hard lockout, the Heil Quaker ICP 1173741 Limit Switch is a critical diagnostic point. This genuine OEM HVAC replacement part is engineered specifically for International Comfort Products (ICP) equipment, functioning as a high-limit safety control that monitors the internal heat exchanger temperature. The switch is rated with an Op195 Cl115 specification, meaning it is designed to open on rise at 195°F to break the burner circuit and automatically close at 115°F once the system has sufficiently cooled. Using a furnace high limit switch with these exact set points is vital for maintaining the manufacturer's airflow and safety parameters. As a SPST (Single Pole Single Throw) component, it provides reliable continuity during normal operation. Professionals should always verify Heil furnace parts compatibility by checking the model number to ensure this L195-40 limit control matches the system's requirements for thermal protection and operational safety.
Key Benefits- Precision Thermal Monitoring: High-accuracy 195-degree open temperature prevents heat exchanger damage during restricted airflow events.
- Automatic Reset Function: The internal bi-metal disc triggers a reset at 115°F, allowing the system to resume normal heating cycles without manual intervention once cooled.
- OEM Standards: Built to the exact electrical and physical specifications of ICP heating systems, ensuring a drop-in fit and proper terminal alignment.
- Essential Safety Component: Acts as the primary fail-safe against blower motor failure or clogged internal filters that lead to overheating.
What causes this limit switch to trip repeatedly?
In most cases, a tripped limit switch is the result of insufficient airflow. Check for a clogged air filter, blocked return air grilles, or a failing blower motor. If the airflow is confirmed to be within spec but the switch still opens below 195°F, the internal bi-metal disc may have fatigued, necessitating a replacement.
Is the 1173741 limit switch compatible with all Heil furnaces?
While this part is common across many Heil, Quaker, and Tempstar units, it is specific to the Op195 Cl115 temperature rating. Always cross-reference your specific model number, as using a switch with an incorrect temperature rating can lead to premature tripping or dangerous overheating conditions.
How do I test if this switch is defective?
With the power disconnected and the wires removed, use a multimeter to check for continuity across the terminals. At room temperature, the switch should be closed (show continuity). If it shows an open circuit while cold, the component has failed and must be replaced.
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.












