Ariston
Evaporator Icing / Defrost Failure
Dehumidifier coils freeze up into a solid block of ice during operation
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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, Faulty evaporator temperature sensor, Restricted airflow, Low refrigerant charge
How to Fix / Troubleshooting
Safety: Unplug the unit before defrosting. Do not use sharp tools to remove ice.
Steps:
- 1. Defrost completely: Turn off and allow all ice to melt. Place towels to catch water.
- 2. Check room temperature: Use the unit only within the specified temperature range. Move it to a warmer room if necessary.
- 3. Clean filter and coils: Ensure airflow is not restricted.
- 4. Check evaporator sensor: Inspect and, if needed, replace the evaporator NTC temperature sensor if the unit does not enter defrost mode properly.
- 5. If icing persists: A refrigerant or metering issue may exist; contact a refrigeration technician.
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Repair Difficulty
Hard
4/5
Required Part
Evaporator NTC Temperature Sensor
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