Amana-Goodman 1370905S Limit Switch

The Amana-Goodman 1370905S Limit Switch is a critical safety component designed for high-temperature monitoring within HVAC furnace configurations. This OEM replacement limit switch features a 3.25-inch insertion depth, ensuring the sensing thermal element is precisely positioned in the airflow stream for accurate temperature detection. Engineered with an automatic reset mechanism, the 1370905S is calibrated for a 260-290°F temperature range, functioning as a normally closed switch that opens the heater circuit if internal plenum temperatures exceed safe operational parameters. Built to meet exact factory specifications for Goodman and Amana furnaces, this switch provides the necessary furnace high-limit protection required to prevent heat exchanger damage and ensure system integrity during high-static or restricted airflow conditions. For contractors, utilizing genuine Amana-Goodman replacement parts ensures compatibility with existing wiring harnesses and mounting footprints, maintaining the equipment's UL listing and operational standards.

• Precision Calibration: Triggers at 260-290°F to provide reliable furnace high-limit protection.
• OEM Fitment: Designed as a direct drop-in for Goodman furnace limit switch replacements.
• Optimized Insertion: The 3.25" probe length ensures accurate thermal reading within the plenum.
• Automatic Reset: Resumes normal operation once temperatures fall back within the safe range.
• Durable Construction: Built to withstand the thermal stress of high-efficiency gas furnaces.

What causes this limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, often caused by a dirty air filter, blocked return ducts, or a failing blower motor.

Can I use a 1370905S in place of a different temperature-rated switch?
No. You must match the fixed temperature setting of 260-290°F to ensure the system operates within its engineered safety parameters.

Is the 1370905S a normally open or normally closed switch?
This is a normally closed (NC) switch that opens upon reaching the high-temperature limit to break the 24V circuit to the gas valve.

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.