and the terminal layout (R

1 requirements for atmospheric vacuum breakers

Precision Calibration: Pre-set at 0

Double-Throw) control designed specifically for heat pump air handler applications

York S1-331-03009-000 Control 30067439-890 and the terminal layout (RUpgrade and maintain system integrity with the York S1 331 03009 000 Control, a specialized 2 Stage Furnace Control board designed for high performance residential heating applications. This genuine York OEM part serves as the central logic unit for two stage gas furnaces, precisely managing ignition sequencing, inducer motor speeds, and blower timing to ensure balanced airflow and efficient heat distribution. As a veteran grade HVAC circuit board