Hisense
Loss of Refrigerant / Weak Cooling System
Dehumidifier runs but does not collect water even in a humid room.
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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
Refrigerant leak in evaporator or condenser, Restricted capillary tube, Weak compressor, Severely dirty coils reducing heat exchange
How to Fix / Troubleshooting
Safety first: Unplug the unit. Do not attempt to open the sealed system or add refrigerant yourself.
- Verify humidity: Confirm the room is actually humid (windows fogging, hygrometer above 60% RH). In very dry conditions, little water will be collected.
- Clean filter and coils: Wash the air filter and clean both evaporator and condenser coils to maximize performance.
- Check coil temperature: With the cover removed and the unit briefly powered (use caution), the evaporator should become cold and may lightly frost after several minutes. If it stays warm or only a small section cools, the sealed system may be failing.
- Listen to compressor: A compressor that never starts or cycles off quickly may indicate an internal fault.
- Professional service: If cleaning does not restore water collection and the coil does not get cold, contact a certified technician. Sealed system repairs require specialized tools and refrigerant handling certification.
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Repair Difficulty
Professional Required
5/5
Required Part
Sealed Refrigeration System
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