GE 20 Manuel D'utilisation page 8

About the controls on the refrigerator.
The temperature controls on your refrigerator have letters and numbers.
Initially set the fresh food control at 5 and the freezer control at C.
If you want colder or warmer temperatures, adjust the fresh food
temperature first. When satisfied with that setting, adjust the freezer
temperature.
Initial Setting 5
Coldest 9
Fresh Food
1
Initial Setting C
Coldest E
A E
B D
C
Freezer
2
8