Hisense
Evaporator Coil Icing
Dehumidifier freezes up; evaporator coil becomes a solid block of ice.
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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
Low room temperature, Restricted airflow from dirty filter, Low refrigerant charge, Faulty defrost sensor or control
How to Fix / Troubleshooting
Safety first: Unplug the unit and allow all ice to melt before further inspection.
- Move to warmer room: Ensure the unit is used in a room above the minimum operating temperature (typically 41°F / 5°C).
- Clean filter and coils: Wash the air filter and clean the evaporator coil to restore airflow.
- Check fan operation: Verify the fan runs at full speed during operation. A weak or non-running fan will cause icing.
- Defrost sensor: Inspect the evaporator/defrost sensor for proper attachment and wiring. Replace if faulty.
- Service if persistent: If icing continues despite proper temperature and airflow, a refrigerant or control issue may exist; contact a technician.
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Repair Difficulty
Medium
3/5
Required Part
Defrost / Coil Temperature Sensor
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