OK, we better start over. The defrost system is not working. Make sure the unit is plugged in and running. Remove the lower kick plate. Locate the defrost timer and bracket front center. Use a flat blade screwdriver to slowly advance it, one click at a time until the refrigerator turns off. You’re in a defrost cycle. See if the defrost heater(s) on the evaporator turn on. If they do replace the defrost timer Part# WR9X362. If the defrost heater(s) does not turn on you’ll need a VOM to check the defrost thermostat (Part# WR50X0035) and defrost heater(s) (Part# WR51X0231) for continuity. Check the defrost thermostat while it’s frosty. It needs to be below 40*F to show continuity. If either one shows 1 or infinite resistance, replace it. If they both check good, replace the defrost timer.