Amana-Goodman 1370911S Limit Switch

The Amana-Goodman 1370911S Limit Switch is a critical safety component designed for high-temperature monitoring within HVAC furnace configurations. This OEM replacement limit switch features a fixed 190-220°F temperature range and functions as an auto-reset limit control, ensuring the system shuts down if internal temperatures exceed safe operating parameters. Engineered with a 3.25-inch insertion depth, this probe-style sensor is compatible with a wide range of Amana, Goodman, and Janitrol gas furnaces. It utilizes a bimetal disc sensing element to provide accurate thermal response times, preventing heat exchanger damage and maintaining system integrity. For contractors performing furnace limit switch troubleshooting, this genuine Goodman furnace part ensures precise calibration and long-term reliability compared to aftermarket alternatives. Proper installation involves verifying the L190-30F specifications to match the original equipment manufacturer’s requirements for airflow and heat rise safety.

• Broad Compatibility: Direct replacement for multiple Amana and Goodman furnace models requiring a 3.25-inch probe.
• Auto-Reset Functionality: Automatically resets once temperatures drop 30 degrees below the 220°F trip point, reducing unnecessary service calls for manual resets.
• OEM Precision: Calibrated to strict HVAC safety standards to ensure accurate cycling and protection against overheating.
• Durable Construction: Features a robust ceramic and metal housing capable of withstanding high-static furnace environments.

Is the 1370911S compatible with my specific furnace model?
This limit switch is a standard Goodman HVAC replacement part for many units. You should verify the temperature rating and insertion depth printed on your existing switch—specifically looking for the 190-220F stamp—before installation.

What causes this furnace limit switch to trip frequently?
While a faulty switch can occur, frequent tripping usually indicates restricted airflow caused by a dirty air filter, blocked return air ducts, or an undersized blower motor. Always check system static pressure when replacing a high limit control.

How do I test if the 1370911S is defective?
Using a multimeter, technicians should check for continuity across the terminals when the switch is cool. If the switch remains open at room temperature, the internal bimetal disc has failed and requires immediate replacement.

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.