Key Benefits Broad Operating Range: Adjustable from 12°F to 47

Common Questions: What units is this orifice compatible with

extending the service life of the Armstrong heating system

As a DPDT (Double Pole Double Throw) device

York S1-031-01251-000 Control Board R-410A Key Benefits Broad Operating Range:The York S1 031 01251 000 Defrost Control Board is a critical OEM replacement part engineered for heat pump systems across the York, Coleman, and Luxaire product lines. As a veteran grade HVAC control board, this component manages the timing and execution of defrost cycles, ensuring the outdoor coil remains clear of ice accumulation during low ambient operations. This specific S1 03101251000 model serves as a direct upgrade for legacy part numbers,