If your refrigerator freezes its contents, even when the cold control is set to its lowest setting, the cold control is probably defective. Call an appliance repairperson.
As a rule, refrigerators are designed to maintain 36 to 40 degrees Fahrenheit in the refrigerator box and 0 to 5 degrees F in the freezer box. Setting either compartment to lower temperatures generally costs you extra in energy dollars.
If the icemaker keeps making ice, even when full:
1) Lift the bail wire to shut it off.
2) Empty the bin, remove the icemaker, clean it, and reinstall it.
3) If the problem persists, consider having an appliance repairperson remove and replace the entire icemaker and valve. With this type of problem, it's often better to replace the unit rather than pay for the repair.
As a rule, refrigerators are the most dependable of all large appliances. Even so, they do fail to do their jobs adequately on occasion, and when they do, the results can be disastrous because expensive food can spoil in a hurry.
Though most problems call for a repairperson, there are a few simple repairs you can handle yourself by checking the power, controls, condenser coils, and other parts outside of your refrigerator's sealed, hermetic system.
Remember that the best way to lengthen the life of a refrigerator is to clean the condenser coils once a year—or more frequently if they get dirty.
