Honeywell
Evaporator Coil Icing
Dehumidifier coils freeze over with ice during operation; airflow is reduced and water collection stops.
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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, Faulty defrost sensor, Restricted airflow from dirty filter or fan issues, Low refrigerant charge
How to Fix / Troubleshooting
Safety: Unplug the unit before defrosting or servicing.
Steps:
- Defrost: Turn the unit off and allow all ice to melt completely. Place towels under the unit to catch drips.
- Check room temperature: Ensure the unit is used in a room within the specified temperature range (typically above 65°F / 18°C for best performance).
- Clean filter and coils: Clean the air filter and gently clean the evaporator coil to restore airflow.
- Inspect fan operation: Confirm the fan runs at full speed; replace the fan motor if weak.
- Test defrost sensor: Check the coil temperature sensor for proper resistance and replace if out of spec.
Note: Persistent icing after these steps may indicate a refrigerant issue requiring a professional technician.
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Repair Difficulty
Medium
3/5
Required Part
Defrost / Coil Temperature Sensor
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