Argo
Evaporator Coil Icing / Defrost Failure
Dehumidifier shuts off after a few minutes and the evaporator is covered in 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 ambient temperature, Faulty defrost sensor, Poor airflow due to dirty filter or fan issues, Low refrigerant charge
How to Fix / Troubleshooting
Safety: Unplug the unit and allow ice to melt naturally. Do not chip ice with sharp tools.
Steps:
- Check room temperature: Ensure the room is within the recommended operating range. Move the unit to a warmer area if necessary.
- Clean filter and coil: Wash the air filter and clean dust from the evaporator coil to restore airflow.
- Verify fan operation: Confirm the fan runs at full speed. Replace the Argo indoor fan motor if weak or intermittent.
- Defrost sensor: Inspect and test the defrost NTC sensor. Replace the Argo defrost NTC sensor if readings are incorrect.
- Professional check: If icing persists despite good airflow and correct sensor operation, have a technician check refrigerant charge and system performance.
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Repair Difficulty
Medium
3/5
Required Part
Argo Defrost NTC Sensor
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