The Midea 17222700000162 Air Conditioner Electrical Control Box Sub Assembly is used to control the communication between the appliance unit sensors, compressor, and indoor fan system. It controls the distribution of voltages and control mode switching under temperature and control signals. The circuitry synchronizes timed cooling action and system protection when there are changes in the power. It connects to the control wiring and compressor terminals to provide balanced air conditioning operation and efficient electrical operation.