The adapter board is designed for inverter refrigerator repair, converting the original inverter control system into a fixed-frequency compressor drive signal, compatible with mainstream refrigerator models.When the inverter compressor is damaged, this solution allows you to avoid the high cost of original accessories by simply replacing it with a fixed-frequency compressor to restore refrigeration functionality.This adapter board is specifically used for repairing inverter refrigerators, enabling the replacement of a broken inverter compressor with a fixed-frequency compressor.Installation involves replacing the inverter motherboard with the adapter board and ensuring the fixed-frequency compressor has adequate cooling capacity based on the refrigerator's specifications.The wiring setup includes connecting the red and black wires to the motherboard signal line and the black wire to the 110-220V input line, with the blue line providing 110V-220V AC output to the fixed-frequency compressor.This innovative adapter board provides a cost-effective solution for repairing inverter refrigerators by allowing the use of fixed-frequency compressors. It simplifies the repair process, making it accessible for users to restore their refrigerator's cooling capabilities without the need for expensive original parts. The straightforward installation process ensures compatibility with various refrigerator models, making it a versatile choice for those facing compressor issues.Color: White & BlueMaterial: plasticPackage Contents:1* Inverter refrigerator to fixed frequency converterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.