Amana-Goodman B1370919 Limit Switch

The Amana-Goodman B1370919 Limit Switch is a critical safety component designed for precise thermal monitoring in residential and commercial HVAC systems. This heavy-duty furnace limit switch features an L170-30F calibration, meaning it is engineered to trip at a 170°F high-limit threshold and automatically reset once temperatures drop by 30°F, typically operating within a 140-170F safety window. Built for compatibility with Goodman, Amana, Janitrol, and Daikin gas furnaces, this OEM replacement part ensures the burner circuit opens if the heat exchanger exceeds safe operating parameters, preventing equipment damage and potentially hazardous overheating. Its 7-inch insertion length makes it a direct fit for various air handler and furnace configurations where reliable high-limit protection is required. Technicians should verify airflow requirements and duct pressure during installation, as frequent tripping often indicates underlying issues such as a clogged filter or a failing blower motor. Replace worn or sticking switches with this genuine Amana-Goodman B1370919 to maintain factory-spec safety and system integrity.

• Precise Thermal Protection: Features a fixed L170-30F high limit to shut down burners before the heat exchanger reaches critical temperatures.
• Automatic Reset Functionality: Restores circuit continuity automatically after the system cools, reducing downtime for the end user.
• Direct OEM Compatibility: Specifically engineered for Goodman, Amana, and Janitrol models, ensuring exact terminal positioning and mounting.
• Durable Construction: Designed to withstand the high-cycle demands of modern gas furnace environments and thermal stress.

• What causes a B1370919 limit switch to trip frequently? Most high-limit trips are caused by restricted airflow, such as dirty air filters, blocked return vents, or a malfunctioning blower motor.
• Can this switch be used in brands other than Goodman? While primarily for Goodman/Amana, it cross-references with several Janitrol and Daikin units; always check the specific OEM part number.
• How do I test if my furnace limit switch is bad? A qualified technician should use a multimeter to check for continuity across the terminals when the furnace is in a cool, "off" state.

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.