If the little top freezer in your mini fridge is freezing water, there could be a few possible reasons:
Temperature Setting: Check the temperature setting of your mini fridge. If it is set too low, the freezer compartment may be reaching temperatures below freezing, causing the water to freeze. Adjust the temperature setting to a slightly higher level.
Thermostat Issue: The thermostat controls the temperature in the mini fridge. If it is faulty or not functioning correctly, it may cause the freezer compartment to become too cold, leading to the freezing of water. In such cases, you may need to replace the thermostat.
Poor Air Circulation: Insufficient airflow within the mini fridge can cause temperature imbalances. If the freezer compartment doesn't receive enough airflow, it may result in localized cold spots, causing the water to freeze. Make sure that the vents and air circulation channels in the fridge are not blocked by items or food. Allow proper airflow by rearranging the contents if necessary.
Defrosting System Issues: Some mini fridges have a manual or automatic defrosting system. If this system is malfunctioning, ice can accumulate in the freezer compartment, causing the water to freeze. Check the defrosting system and ensure that it is functioning correctly.
If the issue persists despite checking these factors, it may be best to consult the user manual of your mini fridge or contact the manufacturer's customer support for further assistance or to arrange for a repair.