Always check the union series stamped on the fitting before replacement

as these two part numbers are functionally identical

Ensure there is no pressure on the ports (open to atmosphere) before holding the zero button to reset the baseline

For longer runs

York S1-031-02987-000 Control Board Freon Always check the union seriesThe York S1 031 02987 000 Reheat Control Board is a critical OEM replacement part designed for industrial and commercial HVAC systems, specifically those requiring precise humidity control and dehumidification. Engineered to manage hot gas reheat cycles, this board ensures optimal climate stability by coordinating with the refrigerant circuit and blower timing. As a genuine York control board, it provides a direct fit solution for commercial rooftop