Dehumidifier runs but collects very little or no water

Safety: Unplug the unit before cleaning or internal inspection.

Steps:

• Clean filter: Remove and wash the air filter. Vacuum dust from inlet and outlet grilles.
• Check room conditions: Ensure doors and windows are closed and the room temperature is within the specified range. Very low temperatures reduce performance.
• Inspect coils: Look at the evaporator and condenser coils. Clean any heavy dust buildup with a soft brush and vacuum.
• Check for frost: If the evaporator is constantly frozen, test the defrost sensor and ensure the unit is not used in too cold an environment.
• Humidity sensor: Compare the unit's humidity reading with a separate hygrometer. If readings are inaccurate, replace the humidity sensor module.
• Sealed system: If airflow is good and coils are clean but still no water is collected, the refrigerant charge may be low and requires professional service.