Heil Quaker ICP 1320331 Limit Switch

The Heil Quaker ICP 1320331 Limit Switch is a critical OEM replacement part designed for precision temperature regulation in ICP furnaces and high-performance HVACR systems. Engineered with a factory-calibrated 120-160F temperature range, this auto limit switch functions as a primary safety control, monitoring the thermal environment of the heat exchanger. When temperatures reach the upper 160?F threshold, the contacts open to interrupt the burner circuit, effectively preventing overheating and potential component failure. Once the system cools to 120?F, the switch automatically resets to restore normal operations. This 1320331 furnace switch is a direct-fit solution for brands under the International Comfort Products umbrella, including Heil, Tempstar, and Comfortmaker. For veteran contractors, the ICP 1320331 ensures system safety and performance by maintaining consistent cycling, reducing the risk of short cycling and heat exchanger stress. Verified as a genuine HVAC high limit control, this component provides the exact differential required to meet factory specifications and maintain localized thermal protection.

• Precision Safety: Maintains a tight 120-160?F operating window to protect against furnace overheating.
• Automated Reset: Features a reliable auto-reset mechanism that eliminates manual intervention after temporary thermal excursions.
• Broad Compatibility: An OEM ICP part that services Heil Quaker, Tempstar, and Arcoaire units, ensuring proper fitment and terminal alignment.
• Critical System Protection: Prevents heat exchanger damage by regulating furnace high limit thresholds during airflow restrictions.

What are the symptoms of a failing ICP 1320331 limit switch?
Common indicators include the furnace short cycling, the blower fan running continuously even after the burner shuts off, or 4-flash error codes on the ICP furnace control board. A faulty switch may fail to close at 120?F, preventing the heating cycle from initiating.

What causes this limit switch to trip repeatedly?
Repeated tripping is often the result of restricted airflow. Technicians should inspect for clogged air filters, blocked return vents, or a failing blower motor, as these conditions cause the internal plenum temperature to exceed the 160?F cutoff.

Can the 1320331 be used to replace a manual reset switch?
No, this is an auto-reset limit switch. It should only be used in applications where the manufacturer specifies an automatic return to a closed state once temperatures drop to the 120?F reset point.

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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.