Carrier Loss of Refrigerant Charge or Severely Reduced Cooling Capacity

Dehumidifier runs but does not collect water; room remains humid.

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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, Leaking braze joint on compressor lines, Restricted capillary tube or metering device, Weak compressor

How to Fix / Troubleshooting

Safety first: Unplug the unit. Do not attempt to cut into or recharge the sealed system yourself.

Homeowner checks:

  • 1. Confirm operating conditions: Ensure the room is warm enough (typically above 65°F/18°C) and humidity is actually high. Dehumidifiers remove less water in cool rooms.
  • 2. Check airflow: Clean the air filter and coils. Verify the fan is running and airflow is strong.
  • 3. Observe coil temperature: With the cover removed and using caution, briefly run the unit. The evaporator should become uniformly cool and may lightly sweat. If it stays warm or only a small section gets cold, refrigerant issues are likely.

Next steps: Loss of capacity due to low refrigerant or a weak compressor requires a Carrier-qualified refrigeration technician. They will locate leaks, repair or replace coils, evacuate, and recharge the system to factory specifications.

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Repair Difficulty

Professional Required 5/5

Required Part

Evaporator Coil
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