My whirlpool wrs325sdhz08 refrigerator has a mysterious ice buildup. From the pattern of the ice, it seems to be coming from a drip located somewhere near the ice maker at the top of the freezer.
The ice maker has been turned off for a few weeks as it was making a loud whining sound and the water dispenser on the freezer door has stopped dispensing water.
Here is the refrigerator manufacturer's label:

Here is the ice buildup which appears to be caused by the drip:

