The Whirlpool W11578028 Refrigerator Inverter Box regulates compressor operation to support consistent cooling in compatible refrigerators. This inverter board converts incoming electrical power into the controlled output required by the compressor, allowing its operating speed to adjust according to the refrigerator’s cooling needs. Installed near the compressor at the rear of the re... https://www.hnkparts.com/whirlpool-w11578028-refrigerator-inverter-box