Evap fan motor not running

I have this Kenmore (LG) refrigerator that the cust. had the freezer door open for an extended time to clean. After cleaning the alarm continues to go off and the evap fan motor is not running. I assume this is the door alarm, but the doors were closed. The evaporator fan is not running and the freezer light is not working. Compressor and condenser fan works. I reset the unit and the fan started working and the beeping went away.Freezer light working too. Within 12 hours the beeping came back and the fan is not running again. No error codes. I can not find any tech sheet or information on this one. I tested the freezer door switch and it tested fine.