thanks to its sealed spring cage which protects internal adjustment components from environmental debris and moisture

70 Cv flow coefficient

Optimized Leverage: The 5 3/4-inch length provides the mechanical advantage required for large-scale multi-blade damper banks

Reliable Connectivity: High-grade insulated wiring prevents short circuits and withstands the high ambient temperatures found within the boiler cabinet

York S1-031-01975-000 Control Board 30067439-890 thanks to its sealed springThe York S1 031 01975 000 Defrost Control Board is a critical OEM replacement part engineered for high performance management of the defrost cycle in York, Coleman, and Luxaire heat pumps. As a veteran grade HVAC control board, it utilizes an intelligent demand defrost algorithm that monitors outdoor coil temperature and ambient conditions to mitigate frost accumulation accurately. By initiating defrost timing based on accumulated compressor run time,