EC
Hisense Refrigeration System Efficiency or Compressor Protection Fault

Display shows EC and the refrigerator may not cool adequately, with long compressor run times.

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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 (leak), Blocked capillary tube or filter drier, Overheated compressor, Faulty condenser fan or dirty condenser coils

How to Fix / Troubleshooting

Safety: Unplug the refrigerator before cleaning or accessing rear components. Sealed system work must be done by a licensed technician.

  • 1. Check ventilation: Ensure there is adequate space around the refrigerator (especially at the back and sides) and that vents are not blocked.
  • 2. Clean condenser coils: Pull the unit away from the wall. Use a vacuum and soft brush to clean dust from the condenser coils and fan area at the rear or underneath.
  • 3. Verify condenser fan operation: With power restored (for observation only), confirm the rear fan runs when the compressor is on. If not, unplug and test/replace the condenser fan motor.
  • 4. Monitor temperatures: After cleaning, allow 24 hours to see if cooling improves and EC clears.
  • 5. Suspect sealed system issues: If the compressor runs almost constantly, the condenser is clean, and cooling is still poor, there may be a refrigerant leak or internal blockage. This requires professional diagnosis with gauges and leak detection.

Do not attempt to open the sealed system or add refrigerant yourself.

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Repair Difficulty

Professional Required 5/5

Required Part

Condenser Fan Motor
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