EC
Whynter Refrigerant System Error / Low Refrigerant or Sensor Fault

Dehumidifier shows EC and does not cool or dehumidify

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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

Low refrigerant charge due to leak, Blocked capillary tube or expansion device, Faulty evaporator temperature sensor, Control board algorithm detecting abnormal cooling performance

How to Fix / Troubleshooting

Safety first: Unplug the unit. Do not attempt to cut or open any refrigerant lines.

Steps to attempt before service:

  • Clean filters and coils: Ensure the air filter, evaporator, and condenser coils are clean to rule out airflow issues.
  • Check ambient conditions: Verify the room is within the specified operating temperature range.
  • Power reset: Unplug for 15 minutes, then plug back in and test.

If EC returns and the unit does not cool, the problem is likely within the sealed refrigeration system or associated sensors. These repairs require specialized tools and must be performed by a certified refrigeration technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Sealed Refrigeration System
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