What is this hidden hole at the back of the fridge for?

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If you notice droplets on the walls or stagnant water, this may indicate that the drain hole is clogged with food residue, mineral deposits, or even frost. Simple maintenance can solve this problem:

Unplug the refrigerator for safety reasons.
Empty and remove the drawers near the hole.
Clear the hole using a toothpick or thin wire to remove obstructions.
Clean thoroughly by pouring a little hot water mixed with white vinegar to disinfect and remove residue.
Tips to avoid condensation problems
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Condensation can be reduced by following a few simple storage practices:

Do not place hot food directly in the refrigerator, as the heat will increase condensation.
Set the right temperature: 5°C for the refrigerator and -18°C for the freezer are ideal for limiting humidity.
Check the drain hole regularly, especially if you notice water in the drawers or on the shelves of the refrigerator.
Conclusion
This small hole in your refrigerator is essential for good humidity management and optimal preservation of your food. A simple maintenance of this component can avoid many inconveniences and extend the life of your refrigerator, while maintaining a healthy environment for your food products.