water is freezing in the reservor,temp in the refregirator is 20

There are a few possibilities number one being the electronic damper control #W10257451. Make sure the damper is working and closing . If it is closed when the refrigerator the refrigerator temperature is satisfyied go the thermister next, there is only one thermister in the freezer. To put the in diagnostic set freezer temp. to lowest setting prior to entering diagnostic mode. Look for your technician diagnostic sheet in your washer and go to test 15 and 16 . This will test test the damper door assembly on and off. Matt Ace technician