Venta
Evaporator Icing / Inadequate Defrost
Venta dehumidifier repeatedly freezes up with ice on the evaporator coil
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Room temperature too low, Restricted airflow due to dirty filter or fan issues, Defective defrost sensor, Low refrigerant charge causing low coil temperature
How to Fix / Troubleshooting
Safety: Unplug the unit and allow ice to melt completely before servicing.
- Check room temperature: Use the dehumidifier only within the recommended temperature range. Move it to a warmer area if necessary.
- Improve airflow: Clean the air filter and ensure the fan is running at full speed. Inspect the fan motor and blades for dust or damage.
- Inspect defrost sensor: Confirm the defrost NTC sensor is properly attached to the evaporator coil and wiring is intact. Replace the defrost NTC sensor if faulty.
- Refrigerant issues: If icing persists despite good airflow and a good sensor, low refrigerant or a metering device problem may be present. This requires a refrigeration technician to diagnose and repair.
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Repair Difficulty
Hard
4/5
Required Part
Defrost NTC Sensor
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