When the chiller compartment of your refrigerator is cold, but the lower section is not, it may indicate poor air circulation or a malfunction in the cooling system. This issue is often caused by a blocked or faulty evaporator fan, which is responsible for distributing cold air from the chiller to the rest of the fridge. If the fan isn't working properly, cold air can become concentrated in the chiller, leaving the lower compartments warm. Another possible cause is a malfunction in the damper control, which regulates the flow of cold air between compartments.

To fix this, a professional technician will first check the evaporator fan to ensure it is functioning correctly. They will also inspect the damper control and other components related to air circulation within the refrigerator.

By addressing these issues, the technician can restore proper cooling throughout the entire refrigerator, ensuring that all compartments maintain the right temperature for safe food storage.