Corrosion Resistance: Internal pin and port materials are selected to resist erosion and common system contaminants

As a veteran-grade Reznor heater replacement part

and other high-pressure refrigerants

this unit ensures seamless compatibility for technicians managing legacy equipment or performing routine maintenance

Using it in an R22 system will lead to severe metering issues and potential system damage

York 331-02981-000 Control Board Kit R-410A Corrosion Resistance: Internal pin andThe York S1 331 02981 000 Control Board Kit is an essential OEM replacement component designed for 3 and 4 stage furnace operation and package unit control. This assembly serves as the direct supersede for the S1 031 02981 000 control board, ensuring seamless integration into existing York HVAC electrical systems without requiring extensive field modifications. Engineered for high demand residential and commercial applications, the board manages