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it is not a direct replacement for the legacy 945 series
Flexible Installation: Features a standard rib on the right edge and inclusive bracket mounting to accommodate multiple furnace burner configurations
while labeled as 230V
Universal Shaft Clearance: Designed to accommodate varying shaft lengths
York S1-331-03003-000 Control Board Kit 321894-708 it is not a directThe York S1 331 03003 000 Control Board Kit is an essential OEM integration for managing the sequence of operation in compatible 24V residential furnace systems and light commercial air handlers. This HVAC circuit board replacement functions as the central processor, interpreting thermostat signals to regulate the inducer motor, gas valve timing, igniter sequence, and blower motor speeds. Engineering for direct fit compatibility, the S1 331 03003 000