Heil Quaker ICP 1320367 Limit Switch

The Heil Quaker ICP 1320367 Limit Switch is a critical OEM replacement part designed for high-temperature safety monitoring in gas furnaces. Engineered as a normally closed disc-style switch, the L220-20F limit switch functions on a precise thermal curve, opening to kill the burner circuit when the internal plenum temperature reaches 220?F. This 220-degree limit switch features an automatic reset mechanism that closes the circuit once the heat exchanger cools to 200?F, ensuring consistent furnace high-limit protection and preventing dangerous overheating conditions. For service technicians, this ICP furnace part provides a direct drop-in solution for Heil, Tempstar, and Comfortmaker units, maintaining the original factory equipment integrity and agency listings. Replacing a drifted or open limit switch restores the proper fan limit control sequence, preventing premature short-cycling and ensuring the blower motor manages residual heat effectively.

• OEM Compatibility: Exact replacement for ICP 1320367 and HQ1320367TD, fitting models like C9MPD, H9MPD, and N9MP series.
• Precision Thermal Calibration: Reliable L220-20F rating with a 20-degree differential for accurate furnace safety shutoff.
• Automatic Reset: Eliminates the need for manual intervention by resetting the circuit at 200?F after a thermal excursion.
• Rugged Disc Construction: Built to withstand the harsh environment of the heat exchanger for long-term HVAC reliability.

• How do I know if my furnace limit switch is bad? If your furnace blower runs constantly or the system is short-cycling without reaching the thermostat setpoint, use a multimeter to check for continuity across the 1320367 terminals.
• What causes a limit switch to trip frequently? Restricted airflow is the primary culprit. Check for a clogged air filter, blocked return air grilles, or a failing inducer motor before replacing the high limit switch.
• Is this switch a manual or automatic reset? This is an automatic reset limit switch. It will close the circuit on its own once the temperature drops 20 degrees below the 220?F trip point.

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.