In most cases, freezers and refrigerators are designed as a single unit with a shared cooling system. So, it is not possible to turn off the freezer and leave the fridge turned on independently. The cooling mechanism typically works by circulating cold air from the freezer to the refrigerator compartment to maintain the desired temperature range.
If you turn off the freezer, it would also affect the cooling of the refrigerator compartment, leading to a rise in temperature and potential spoilage of perishable items. It's important to keep both sections functioning unless you have a specific model or system that allows for independent operation.
If you have a specific situation or requirement in mind, it's best to consult the user manual of your refrigerator or contact the manufacturer to determine if there are any options or recommendations for modifying the cooling settings.