causing the controller to close the gas valve for safety

which translates to a precise

Is there a difference between the 392449-1 and the 392449-1/U

Simplified Calibration: Enables rapid field setpoint verification and adjustment

This aluminum gas regulator cap includes the necessary replacement gasket to ensure a gas-tight seal

Nordyne 626619 Limit Switch causing the controller to closeThe Nordyne 626619 Limit Switch is a critical safety component designed for precise thermal regulation in HVAC furnace systems. As an OEM replacement part, it ensures your equipment adheres to original manufacturer specifications, effectively managing blower cycles and preventing overheating. This auto reset limit switch features a 140F open and 100F close configuration, providing a reliable 40 degree differential to maintain stable heat exchanger