The YORK S1-6109904 2HP Programmable Variable Frequency Drive (VFD) is an original equipment manufacturer (OEM) HVAC control component designed for 240V, three-phase motor applications. It works by adjusting the frequency and voltage supplied to a motor, enabling precise speed control according to system requirements. This drive is used in compatible YORK HVAC equipment, including pac... https://www.partshnc.com/s1-6109904-york-2hp-programmable-variable-frequency-drive-3ph-240v