Why does my transformer keep blowing

While primarily listed as a door plug button

it effectively manages condenser fan cycling to maintain head pressure

or repetitive "lockout" fault codes that do not clear after sensor cleaning or replacement

flame sense failures

York S1-RK-ECO1001-0D Controller 320074-702 Why does my transformer keepThe York S1 RK ECO1001 0D is a dedicated ECONO Basic Model Controller engineered for precise atmospheric management in commercial HVAC systems. This original equipment manufacturer (OEM) component utilizes advanced microprocessor technology to drive energy conservation through automated outdoor air integration. Designed for seamless integration with York rooftop units, it operates on a standard 208 230V voltage range, ensuring stable performance