If your fridge stops working, check the overload relay for signs of overheating or arcing. You can check the overload relay for continuity using a multimeter. If your relay is working fine other issues that can cause a fridge to stop working are cold control and temperature control, or electronic board. The electronic board is installed on newer refrigerators and can be expensive to repair. If your control board shows signs of burnt connections, arching, or damaged foil, you will need to replace this part.