Hewalex
Excessive Defrost Frequency
Unit frequently enters defrost mode and spends long periods defrosting, reducing heating time.
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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
High humidity and low ambient temperature, Dirty evaporator coil, Faulty defrost sensor reading too cold, Incorrect defrost parameters
How to Fix / Troubleshooting
Safety first: Disconnect power before cleaning or accessing sensors.
- Clean evaporator coil: Dirt and debris can cause uneven icing and frequent defrosts. Clean the coil thoroughly.
- Check ambient conditions: In very humid, cold weather, more frequent defrosting is normal. Ensure the unit is not operating outside its specified range.
- Inspect defrost sensor: Confirm it is properly attached to the coil and not exposed to ambient air.
- Service adjustment: A technician can review and adjust defrost parameters in the controller if they are incorrect.
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Repair Difficulty
Medium
3/5
Required Part
Defrost Temperature Sensor
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