while FSE-1/2-Z-3X4SAE is the technical nomenclature describing the valve series

Corrosion Resistance: The zinc-plated steel construction provides essential durability against ambient humidity and minor chemical exposure in mechanical rooms

this gas furnace thermocouple provides rugged durability in high-heat environments like boilers

Specifically engineered for larger 1" to 2" pipe sizes

and use Pin 3 to drive the motor clockwise or counter-clockwise based on the signal from your DDC controller

Amana-Goodman 20002301S Inducer Assembly 30067439-890 while FSE-1/2-Z-3X4SAE is the technicalThe Amana Goodman 20002301S Inducer Assembly is a critical OEM furnace replacement part designed for specific high efficiency gas furnaces. As a draft inducer blower, this component is engineered to pull air through the heat exchanger and expel combustion byproducts safely through the flue. This centrifugal fan assembly ensures the pressure switch closes properly, allowing the ignition sequence to proceed. When a furnace inducer motor begins to fail,