Heil Quaker ICP 1010652 Limit Switch

The Heil Quaker ICP 1010652 Limit Switch is a critical safety component designed for main unit furnace protection in a variety of ICP heating systems. This OEM replacement limit switch features a 3-inch insertion depth and is calibrated to a specific 170-20F temperature rating, meaning it opens the circuit at 170°F and resets when the temperature drops by a 20°F differential. As a veteran-grade HVAC high limit control, it effectively monitors plenum temperatures to prevent heat exchanger damage and ensures the furnace blower motor or burner cycles correctly during high-heat conditions. Built for reliability in Heil, Tempstar, and Comfortmaker units, this 170 degree limit switch provides the precise thermal response required to maintain system integrity and prevent furnace short cycling or overheating. When your gas furnace starts then stops abruptly, verifying the continuity and setting of this 1010652 component is a standard diagnostic step for any field technician.

• Precise Thermal Calibration: Fixed 170°F trip point with a 20°F reset differential for accurate high-temperature protection.
• Broad ICP Compatibility: Direct fit for numerous Heil Quaker, Arcoaire, and Comfortmaker furnace and packaged units.
• OEM Standards: Genuine International Comfort Products part ensures exact 3-inch flange mounting and terminal alignment.
• Enhanced Safety: Acts as the primary safety limit switch to prevent hazardous overheating conditions in the heat exchanger.

What are the symptoms of a failing 1010652 limit switch?
Technicians often see the furnace blower running constantly or the unit short cycling. If the switch stays open, the burners will not ignite, preventing the HVAC system from producing heat.

Can this 170-20F switch be used in place of a different temperature rating?
No. You must stick to the 170-20F specifications. Installing a switch with a different thermal profile can lead to premature component failure or create a fire hazard by allowing the plenum to exceed safe temperatures.

Is the 3-inch depth a critical measurement?
Yes. The 3-inch insertion ensures the sensor is positioned correctly in the airflow path. Using a shorter or longer variant can result in inaccurate temperature readings and nuisance tripping.

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.