Heil Quaker ICP 1171324 Limit Switch

The Heil Quaker ICP 1171324 Limit Switch is a critical safety component designed for precise thermal regulation within high-efficiency residential and commercial HVAC units. Engineered as a normally closed circuit, this disc-style switch is vital for maintaining system integrity by monitoring potential overheating conditions. It is calibrated to an open on temperature rise at 135°F and features an automatic reset that triggers once the temperature drops by the 40°F differential, specifically at a cut-in temperature of 95°F. This specific L135F-40 configuration serves as a direct OEM replacement part for a wide range of brands under the International Comfort Products (ICP) umbrella, including Heil, Tempstar, Arcoaire, and Comfortmaker. Utilizing a genuine 1171324 limit switch ensures that your equipment operates within the manufacturer's specified delta-T parameters, preventing premature component fatigue and ensuring the unit powers down safely during restricted airflow or high-static pressure events. This HVAC high limit control is built for a 2" x 1-1/2" footprint to ensure direct-fit compatibility.

• Precise Thermal Protection: Engineered to open at 135°F, protecting the heat exchanger from excessive temperatures.
• OEM Standards: Matches exact ICP 1171324 electrical specifications for seamless integration and reliability.
• Automatic Reset Functionality: Resets once the cooling cycle reaches 95°F, reducing unnecessary service call-backs.
• Wide Compatibility: Designed for use in popular packaged units and furnaces within the Heil Quaker and ICP families.

What causes a 1171324 limit switch to trip repeatedly?
Frequent tripping of the 135-40 limit switch is often caused by restricted airflow, such as a clogged filter, closed registers, or a failing blower motor, which forces the unit to exceed its 135°F safety threshold.

Is the ICP 1171324 a manual or automatic reset?
This specific part is an automatic reset limit switch. It will close the circuit automatically once the system cools down to the 95°F cut-in temperature.

Can I use a different temperature-rated limit switch?
No. You must use the 135°F/40°F differential specified for your model to maintain the intended safety sequence and prevent damage to the primary heat exchanger.

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.