Manufacturer Name: Trane Product Number: CNT5875 OEM Part Number: CNT5875 The Trane CNT5875 Defrost Control is required to keep the Trane heating and cooling systems running smoothly. By controlling the defrost cycle, this electrical board keeps ice from accumulating on the evaporator coil, which obstructs airflow and impairs system efficiency. Frost accumulation triggers the CNT... https://www.partshnc.com/defrost-control-for-trane-part-cnt5875