The York 1157-910-1, 5438494, 4522M162270 Control Board (1 Unit) is a genuine OEM defrost control module designed for York split HVAC systems. This board precisely regulates the defrost cycle to prevent coil freeze-up, ensuring efficient heat pump operation in cold conditions. It provides consistent performance and reliable control for both heating and cooling functions. Key Features Genuine York OEM defrost control board Optimized for split system heat pumps Automatically manages defrost cycles to prevent coil icing Enhances energy efficiency and system reliability Durable construction for long service life Specifications Part Numbers: 1157-910-1, 5438494, 4522M162270 Type: Defrost Control Board Application: Split System Voltage: 24V Control Circuit Brand: York Compatible Models THE60B41S THE42B32S THE36B41S THE48B31S THE42B43S THE42B31S THE30B31S THE42B42S THE36B32S V22AW12N2KCYC1 and more Why Choose This Item Choose the York 1157-910-1, 5438494, 4522M162270 Control Board (1 Unit) for reliable defrost management and system protection. Engineered to original York specifications, it ensures smooth operation, reduced energy waste, and long-term dependability in your split HVAC unit.