Hey, give this link a shot: https://www.samsung.com/us/support/troubleshooting/TSG01001852/#a-sheet-of-ice-forms-in-the-refriger... If this does not help I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case by case basis please provide the full model code and the serial number of the device as well as your best contact phone number, name, and email.
