Customer gave me a used 21 cu ft Sears fridge. (Freezer on the top, refrigerator on the bottom.) I put it in the garage for a spare and have been monitoring the air temps in the refrigerator and freezer compartments.

The air temp in the refrigerator is at 36 when it shuts off on the stat, but goes up to about 43 before it kicks back on.

The air temp in the freezer is at 1 when it shuts off and it kicks back in at 11.

Is this too great a differential?