Dehumidifier running but not collecting any water (Meaco & De’Longhi)

A dehumidifier that’s running — fan audible, lights on — but not pulling any water into the tank usually comes down to settings or room conditions rather than a fault, since dehumidifiers are more sensitive to their environment than most appliances.

What to check first

1. Check the target humidity setting isn’t already satisfied — if you’ve set it to, say, 60% and the room is already at or below that, the unit will run its fan but won’t actively dehumidify, which is correct behaviour, not a fault.
2. Check the room temperature — most compressor-based dehumidifiers work much less effectively below around 15°C, and some won’t extract meaningful water at all in a cold room; a desiccant-type dehumidifier (check your model) is less affected by low temperature if this is a persistent issue in a cold space.
3. Check the air filter isn’t clogged with dust, restricting airflow through the unit.
4. Check the tank is inserted correctly and fully — a tank sitting slightly out of position can trigger a full-tank safety cut-out or stop water draining into it properly, even when it’s actually empty.

When to call an engineer

If the room is warm enough, the target humidity genuinely isn’t met, the filter’s clean, and the tank is seated correctly, but still no water collects, the compressor or refrigerant system may have failed — worth a professional check, as refrigerant-based repairs aren’t a DIY job.