York S1-031-01971-000 Control Board 318172-701 while the diaphragm-operated second valve

while the diaphragm-operated second valve ensures stable burner performance under the regulation of the precise internal spring

and Luxaire centrifugal blower configurations

engineered for the rigorous duty cycles of ovens

reducing energy draw while maintaining consistent temperature control

This valve features a Maximum Operating Pressure Differential (MOPD) of 300 PSIG when used with standard AC coils

York S1-031-01971-000 Control Board 318172-701 while the diaphragm-operated second valveThe York S1 031 01971 000 Defrost Control Board is a critical OEM replacement part designed to manage heat pump termination and initiate cycles within commercial refrigeration systems and residential HVAC units. This Source 1 technical component functions as the primary logic board, coordinating the reversing valve, auxiliary heat strips, and outdoor fan motor to prevent hazardous ice accumulation on the condenser coils. Engineered for precise