The inverter control board is the electronic "brain" located inside the outdoor unit of your Heat Pump System. It manages the power frequency sent to the compressor, allowing it to run at variable speeds. We stock genuine Midea Inverter Control Boards and other brand-specific replacements. This board is sensitive to power surges, which is why we always recommend an AGM Surge Protector. If your unit displays a communication or power error, this board may need inspection by a pro. It works in constant harmony with the Wired Wall Controller or remote. You can find wiring details for these boards in our Technical Data section. This sophisticated tech is what drives our high SEER2 Ratings.