Featuring a robust brass body and a 3/4" orifice

Engineered as the direct replacement for 104G7800HS

supporting consistent BTU output

allowing for efficient brazing without internal disassembly

York S1-031-03004-000 Control Board 322838-752 Featuring a robust brass bodyThe York S1 031 03004 000 Defrost Control Board is a critical OEM replacement component engineered for precision management of defrost cycles in residential and commercial heat pump systems. Designed to interface seamlessly with the York heat pump control architecture, this board monitors liquid line and outdoor ambient temperatures to initiate demand defrost, preventing ice accumulation on the outdoor coil and maintaining high efficiency thermal