Hisense Insufficient Cooling / Partial Loss of Refrigeration

Freezer runs but does not get cold enough; temperature stays above -10°C (14°F).

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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

Dirty condenser coils reducing heat rejection, Weak compressor, Low refrigerant charge due to leak, Evaporator fan not circulating air properly

How to Fix / Troubleshooting

Safety first: Unplug the freezer before cleaning coils or removing panels.

  • Check door sealing: Ensure the door gasket is intact and sealing. Warm air leaks can reduce cooling performance.
  • Clean condenser: Pull the freezer away from the wall. Use a vacuum and soft brush to clean dust from the condenser coils and rear grille. Ensure adequate clearance for airflow.
  • Verify fan operation: Confirm the evaporator fan runs when the compressor is on. If not, inspect and replace the fan motor as needed.
  • Check frost pattern: Remove the inner rear panel and inspect the evaporator coil. A healthy system will have an even frost pattern across most of the coil. Frost only on a small section or no frost at all suggests a sealed system issue.
  • Monitor temperature: After cleaning and verifying fans, allow 12–24 hours and check temperature with a thermometer.

If cooling remains weak and the frost pattern is abnormal, the unit likely has a sealed system problem (leak, restriction, or weak compressor) that must be repaired by a refrigeration technician.

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Repair Difficulty

Hard 4/5

Required Part

Condenser Coil
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