Heil Quaker ICP 1071581 Limit Switch

The Heil Quaker ICP 1071581 Limit Switch is a critical safety component engineered for International Comfort Products (ICP) heating systems, including Tempstar, Comfortmaker, and Heil units. This OEM replacement part is configured as a 190-25 limit switch, meaning it is designed to open and interrupt the heating circuit when temperatures reach 190°F and reset once the temperature drops by the 25°F differential. As an auto-reset furnace limit switch, it prevents heat exchanger damage and hazardous overheating conditions caused by restricted airflow or blower failure. For technicians servicing G4M120A4H1 or PGA120I2HA models, this disc-style limit control provides an exact fit and factory-spec calibration. Integrating a genuine 1071581 limit switch ensures that your furnace maintains proper temperature regulation and safety circuit integrity. Its robust construction and standardized mounting tabs facilitate a quick swap in high-cycle residential furnace environments, ensuring the system remains compliant with original manufacturer safety protocols.

• Precise Thermal Protection: Factory-calibrated to open at 190°F to protect heat exchangers from oxidative stress.
• Auto-Reset Functionality: Features a 25°F differential, automatically closing the circuit once safe operating temperatures are restored.
• OEM Compatibility: Direct ICP replacement part ensures 100% compatibility with Heil, Quaker, and Tempstar internal wiring harnesses.
• Technical Reliability: Engineered to withstand the frequent thermal cycling of high-efficiency gas furnaces.

• What causes a 190-25 limit switch to trip repeatedly? Frequent tripping is usually indicative of airflow restrictions, such as a clogged filter, blocked return air, or a failing blower motor capacitor.
• Is this switch a direct substitute for other temperature ratings? No. Always match the "L" rating (190°F) to your unit's specific data plate to ensure the safety circuit operates within the intended thermal envelope.
• How do I verify if the 1071581 is faulty? Use a multimeter to check for continuity across the terminals when the switch is cold; an open reading at room temperature indicates a failed internal bimetal disc.

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.