Midea
No Cooling / Hot Gas Bypass or Refrigerant Issue
Dehumidifier runs but blows warm, humid air; humidity in room does not decrease.
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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 or undercharge, Failed compressor valves, Severely dirty condenser coil, Fan not moving enough air
How to Fix / Troubleshooting
Safety: Unplug before cleaning or inspection. Do not open the sealed refrigerant system.
- Clean condenser coil: Remove rear panel and clean the warm coil thoroughly.
- Verify fan speed: Ensure the fan is running at full speed and not dragging. Replace fan motor if weak.
- Check evaporator temperature: After 15–30 minutes of operation, the evaporator should be cold and condensing water. If it remains warm, the compressor or refrigerant system is likely at fault.
- Look for oil stains: Inspect tubing and coils for oily spots indicating leaks.
- Call a technician: Compressor or refrigerant issues require professional diagnosis and repair.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Assembly
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