Why is my fridge working but the freezer not freezing?

When a residential refrigerator fresh food compartment maintains proper cold temperatures while the freezer section turns warm and fails to freeze items, the malfunction typically points to an issue with airflow regulation, damper doors, or dual-evaporator controls. First, inspect the internal air damper duct connecting the freezer to the fridge to ensure it is not stuck wide open, which allows chilled air to escape into the refrigerator section instead of accumulating in the freezer. Second, check for heavy frost buildup on the freezer evaporator coils. Third, verify door seals. You can troubleshoot airflow restrictions easily. You can verify that your repair is successful when clearing ice blockages, freeing stuck damper doors, or replacing faulty sensors restores sub-zero freezing temperatures inside the freezer compartment.