The LG EBR78401707 Air Conditioner Main PCB Assembly provides reliable control of your unit’s cooling functions by managing power flow, system timing, and communication between internal components. Designed to interpret signals from sensors and user settings, it works by regulating compressor activity, fan speeds, and temperature adjustments to ensure consistent performance. This asse... https://www.hnkparts.com/lg-ebr78401707-air-conditioner-main-pcb-assembly