The phenomenon you're experiencing, where items placed in the very back center of the top shelf of your refrigerator freeze or become slushy, is likely due to the location of the cooling vents and the way the airflow is distributed inside the fridge.
Refrigerators are designed with cooling vents and air circulation patterns to ensure even cooling throughout the interior. However, some areas of the refrigerator might be more exposed to the direct flow of cold air from the cooling system, leading to colder temperatures in those specific spots. Here are some factors contributing to this issue and how you can prevent it:
Proximity to Cooling Vents: The cooling vents are usually located at the back or rear of the fridge, and the cold air emanates from these vents. If items are placed too close to these vents, they are more likely to be subjected to colder temperatures, leading to freezing or slushy conditions.
Temperature Setting: Check your refrigerator's temperature setting. If it is set too low, the fridge might be running colder than necessary, causing items to freeze even in areas that are not directly exposed to the cooling vents.
Airflow Obstructions: If the airflow within the refrigerator is obstructed, it can lead to irregular cooling patterns. Make sure not to overload the fridge, and avoid placing items too close to the cooling vents. Allow some space for the air to circulate freely.
Rearrange Items: To prevent freezing in the back center of the top shelf, try rearranging the items in your fridge. Move temperature-sensitive items away from the back center of the top shelf, and place them in a location where they are less likely to come into direct contact with the cooling vents.
Use Crisper Drawers: If your fridge has crisper drawers, use them for fruits, vegetables, and other items that are sensitive to cold temperatures. The crisper drawers usually have separate temperature and humidity controls, providing a milder and more stable environment for these items.
Check Door Seals: Ensure that the door seals are clean and functioning correctly. A damaged or worn-out seal can allow cold air to escape and warmer air to enter, leading to uneven cooling.
Temperature Monitoring: Consider using a refrigerator thermometer to monitor the temperature inside your fridge accurately. This can help you adjust the settings if necessary.
If you've tried these adjustments and the issue persists, it's possible that there might be an internal problem with the refrigerator's cooling system or thermostat. In such cases, it's best to have a professional technician inspect and repair the appliance.