Heil Quaker ICP 1184421 Limit Switch
The Heil Quaker ICP 1184421 Limit Switch is a critical safety component designed for precise temperature regulation in high-performance HVAC systems. This 160-180F AUTO Limit Switch functions as a primary safety boundary, monitoring the supply plenum temperature. When internal temperatures exceed the 180?F threshold, the SPDT contact configuration opens to break the heating circuit, preventing heat exchanger damage. Once the system cools to 160?F, the automatic reset limit switch closes the circuit to resume normal operation. Built for 120/240 VAC applications at 20A, this OEM 1184421 replacement ensures exact electrical matching and timing, which is vital for preventing the nuisance tripping or short-cycling often associated with generic alternatives. For professional contractors, installing a genuine furnace high limit switch is the only way to maintain the original safety certification and thermal response profile of the air handler or furnace.
Key Benefits
- Precise Thermal Control: Engineered for a specific 160?F to 180?F operating range to protect the heat exchanger from cracks and overheating.
- Automatic Reset Functionality: Eliminates manual intervention by resetting the circuit once the plenum reaches safe operating temperatures.
- Heavy-Duty Electrical Rating: Capable of handling 20A loads across 120/240V circuits for broad compatibility with ICP commercial and residential units.
- Direct OEM Fit: Ensures correct mounting hole alignment and terminal positioning, reducing installation time in the field.
Common Questions
What causes this limit switch to trip repeatedly?
Frequent tripping is usually a symptom of restricted airflow. Check for a dirty air filter, a malfunctioning blower motor, or blocked return air vents that are causing the internal temperature to spike above 180?F.
Can I use this as an universal HVAC limit switch replacement?
While it fits many Heil Quaker, Tempstar, and Comfortmaker models, you should always verify the specific temperature range and insertion depth. Using a switch with a different thermal profile can lead to unsafe operating conditions.
How do I test the 1184421 for failure?
With the power disconnected, use a multimeter to check for continuity. If the switch remains open at room temperature, the internal bimetal disc is likely defective and requires immediate 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: $14.57
-65%$14.57
$5.10Heil Quaker ICP 1184421 Limit Switch
The Heil Quaker ICP 1184421 Limit Switch is a critical safety component designed for precise temperature regulation in high-performance HVAC systems. This 160-180F AUTO Limit Switch functions as a primary safety boundary, monitoring the supply plenum temperature. When internal temperatures exceed the 180?F threshold, the SPDT contact configuration opens to break the heating circuit, preventing heat exchanger damage. Once the system cools to 160?F, the automatic reset limit switch closes the circuit to resume normal operation. Built for 120/240 VAC applications at 20A, this OEM 1184421 replacement ensures exact electrical matching and timing, which is vital for preventing the nuisance tripping or short-cycling often associated with generic alternatives. For professional contractors, installing a genuine furnace high limit switch is the only way to maintain the original safety certification and thermal response profile of the air handler or furnace.
Key Benefits
- Precise Thermal Control: Engineered for a specific 160?F to 180?F operating range to protect the heat exchanger from cracks and overheating.
- Automatic Reset Functionality: Eliminates manual intervention by resetting the circuit once the plenum reaches safe operating temperatures.
- Heavy-Duty Electrical Rating: Capable of handling 20A loads across 120/240V circuits for broad compatibility with ICP commercial and residential units.
- Direct OEM Fit: Ensures correct mounting hole alignment and terminal positioning, reducing installation time in the field.
Common Questions
What causes this limit switch to trip repeatedly?
Frequent tripping is usually a symptom of restricted airflow. Check for a dirty air filter, a malfunctioning blower motor, or blocked return air vents that are causing the internal temperature to spike above 180?F.
Can I use this as an universal HVAC limit switch replacement?
While it fits many Heil Quaker, Tempstar, and Comfortmaker models, you should always verify the specific temperature range and insertion depth. Using a switch with a different thermal profile can lead to unsafe operating conditions.
How do I test the 1184421 for failure?
With the power disconnected, use a multimeter to check for continuity. If the switch remains open at room temperature, the internal bimetal disc is likely defective and requires immediate 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.
Product Information
Product Information
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Description
The Heil Quaker ICP 1184421 Limit Switch is a critical safety component designed for precise temperature regulation in high-performance HVAC systems. This 160-180F AUTO Limit Switch functions as a primary safety boundary, monitoring the supply plenum temperature. When internal temperatures exceed the 180?F threshold, the SPDT contact configuration opens to break the heating circuit, preventing heat exchanger damage. Once the system cools to 160?F, the automatic reset limit switch closes the circuit to resume normal operation. Built for 120/240 VAC applications at 20A, this OEM 1184421 replacement ensures exact electrical matching and timing, which is vital for preventing the nuisance tripping or short-cycling often associated with generic alternatives. For professional contractors, installing a genuine furnace high limit switch is the only way to maintain the original safety certification and thermal response profile of the air handler or furnace.
Key Benefits
- Precise Thermal Control: Engineered for a specific 160?F to 180?F operating range to protect the heat exchanger from cracks and overheating.
- Automatic Reset Functionality: Eliminates manual intervention by resetting the circuit once the plenum reaches safe operating temperatures.
- Heavy-Duty Electrical Rating: Capable of handling 20A loads across 120/240V circuits for broad compatibility with ICP commercial and residential units.
- Direct OEM Fit: Ensures correct mounting hole alignment and terminal positioning, reducing installation time in the field.
Common Questions
What causes this limit switch to trip repeatedly?
Frequent tripping is usually a symptom of restricted airflow. Check for a dirty air filter, a malfunctioning blower motor, or blocked return air vents that are causing the internal temperature to spike above 180?F.
Can I use this as an universal HVAC limit switch replacement?
While it fits many Heil Quaker, Tempstar, and Comfortmaker models, you should always verify the specific temperature range and insertion depth. Using a switch with a different thermal profile can lead to unsafe operating conditions.
How do I test the 1184421 for failure?
With the power disconnected, use a multimeter to check for continuity. If the switch remains open at room temperature, the internal bimetal disc is likely defective and requires immediate 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.
