Heil Quaker ICP 1320547 Limit Switch

The Heil Quaker ICP 1320547 Limit Switch is a critical OEM safety component designed for precise thermal management in high-efficiency furnaces. This Normally Closed (NC) switch features an auto-reset mechanism, engineered to break the electrical circuit when the heat exchanger reaches a 180°F cutout temperature. Once the plenum temperature drops to the 160°F cut-in point, the switch automatically resets to restore unit operation. Featuring a 3-inch insertion length, this 160-180F Auto Limit Switch ensures accurate sensing of rapid temperature rises, protecting the heat exchanger from cracking and preventing dangerous overheating conditions.

Built for broad compatibility, this ICP furnace replacement part is the direct OEM limit switch for a wide range of brands under the International Comfort Products umbrella, including Heil, Tempstar, Comfortmaker, Arcoaire, and KeepRite. It effectively replaces older part numbers such as 1320-547, 1010708, and HQ1010708TD. Whether you are troubleshooting a short-cycling furnace or a blower fan that refuses to shut off, installing this genuine 1320547 ICP switch restores the factory-specified safety parameters required for reliable commercial and residential heating performance.

• Precise Thermal Calibration: Fixed 160-180°F range prevents "nuisance tripping" while maintaining strict safety limits.
• OEM Compatibility: Seamlessly fits Heil Quaker, Tempstar, and Comfortmaker models without terminal modification.
• Automatic Reset Function: Eliminates the need for manual intervention after the system cools to safe operating levels.
• High-Durability Construction: Designed to withstand the rigorous heat-up and cool-down cycles of modern gas furnaces.

• Why is my furnace blower running constantly? A failed or tripped 1320547 limit switch often forces the blower into a continuous "on" state as a safety measure to dissipate excess heat.
• What causes this switch to trip frequently? Restricted airflow from a clogged air filter, dirty evaporator coil, or a failing blower motor are the primary causes of reaching the 180°F limit.
• Can I use this for other ICP sub-brands? Yes, this part is the standard 3-inch limit for most Day & Night, KeepRite, and Arcoaire units requiring these specific temperature specs.

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.