Tosot Loss of Refrigerant Charge / Weak Cooling System

Dehumidifier runs but does not collect water; humidity in the room remains high.

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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 coil, Capillary tube or expansion device restriction, Failing compressor with low pumping capacity, Severely dirty coils reducing heat exchange

How to Fix / Troubleshooting

Safety: Do not attempt to open the sealed refrigeration system yourself.

User checks:

  • Filter and coils: Clean the air filter and vacuum dust from both evaporator and condenser coils.
  • Coil temperature: After running 15–20 minutes, carefully feel the air: intake should be warmer than exhaust on a working dehumidifier. If both feel similar and the evaporator coil is not cold, there may be a sealed system issue.
  • Ice pattern: If only a small section of the evaporator ices up while the rest stays warm, this often indicates low refrigerant.

Next steps: Contact a professional technician. In many Tosot portable dehumidifiers, sealed system repair (leak detection, recharge, compressor replacement) is not economical; replacement of the unit is usually recommended.

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Repair Difficulty

Professional Required 5/5

Required Part

Sealed Refrigeration System (Compressor/Evaporator/Condenser)
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