The Honeywell 129436-L3 Oxygen (O2) Sensor is a critical replacement component designed for precision atmospheric monitoring in hazardous environments

If both exist and the shaft rotates freely by hand

it serves as a robust interrupter-type gas valve for standard thermocouple-operated technical systems

Common indicators include the burner failing to spark

Ensure the 24V power harness is connected to the coil terminals

Utica-Dunkirk 12100105000084 Fan Blade Freon The Honeywell 129436-L3 Oxygen (O2)The Utica Dunkirk 12100105000084 Fan Blade is a precision engineered axial flow fan designed for high efficiency thermal exchange in HVACR outdoor condenser units and ductless mini split systems. Featuring a 3 blade configuration with an approximate 22 inch diameter (560mm), this component is critical for maintaining the correct static pressure and CFM output across the condenser coil. Built for durability in demanding exterior environments, it serves