If your milk and lettuce are freezing in the refrigerator, it could be due to a few possible reasons:
Temperature Setting: You mentioned that the fridge is set to "3," which likely refers to the temperature dial. However, the numbering system on fridge dials can vary between different models and manufacturers, so "3" may not necessarily mean a specific temperature. It's best to use the actual temperature setting or adjust it to a warmer setting to prevent freezing.
Temperature Control Issue: The fridge's temperature control or thermostat may be malfunctioning, causing it to become colder than the set temperature. A faulty thermostat can lead to freezing temperatures inside the refrigerator compartment.
Airflow Restrictions: Proper airflow is essential to maintain consistent temperatures throughout the refrigerator. If the vents or air channels inside the fridge are blocked by items or food packaging, it can lead to cold spots, causing certain items to freeze.
Proximity to Freezer: If your refrigerator has a freezer compartment that is directly above or adjacent to the refrigerator section, cold air from the freezer may be seeping into the fridge and causing items to freeze.
Door Seal Issues: Check the door gaskets to ensure they are sealing properly. A faulty door seal can allow cold air to escape, leading to inconsistent temperatures and potential freezing.
To troubleshoot the issue and find a solution:
Check the refrigerator's user manual for specific temperature settings and ensure you are using the appropriate setting for the refrigerator compartment.
If the fridge has separate temperature controls for the refrigerator and freezer, adjust the refrigerator temperature to a higher setting.
Make sure there are no obstructions blocking the vents or air channels inside the fridge.
Check the door gaskets for any damage or debris and ensure they are sealing properly when the door is closed.
If the issue persists, consider contacting the manufacturer's customer support or a professional appliance repair service to diagnose and fix the problem.
Keep in mind that the ideal refrigerator temperature for most food items is around 37-40°F (3-4°C). If you have a refrigerator thermometer, you can use it to verify the actual temperature inside the fridge.