Carrier HH18HA119 Limit Switch 319852-301 replacing the wheel with genuine

replacing the wheel with genuine Carrier parts is the most reliable way to ensure the system meets original factory airflow specifications and maintains safe

having the exact barbed adaptor fittings on hand is critical to maintaining system pressure and ensuring accurate signal transmission

This is a normally open (NO) valve assembly

featuring a fixed 165°F setpoint for circuit interruption or activation

Rotation is easily changed by swapping the lead connectors according to the wiring diagram on the motor nameplate

Carrier HH18HA119 Limit Switch 319852-301 replacing the wheel with genuineThe Carrier HH18HA119 is a critical safety component designed for precise thermal monitoring in high efficiency furnaces and air handlers. Engineered as a 125 35F limit switch, this bi metal snap disc functions as a formal high limit control to prevent heat exchanger damage or hazardous operating conditions. With an opening set point of 125F and a 35F differential for reset, the HH18HA119 ensures the blower assembly and burner sequence maintain safe