Samsung No Cooling / Sealed System or Control Failure

Freezer not cooling at all; interior is warm while lights and display still work.

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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

Failed inverter compressor, Faulty main control board, Loss of refrigerant charge (leak in sealed system), Stuck three-way or capillary restriction, Defective start relay or inverter module

How to Fix / Troubleshooting

Danger: Sealed system and high-voltage work should be performed only by certified technicians. Basic checks can be done safely by the owner.

  • Check settings and modes: Ensure the freezer is not in Demo Mode and that the temperature is set correctly (e.g., -2°F to 0°F / -18°C).
  • Listen for compressor and fans: With the door closed (or door switch held), listen at the back for the compressor and condenser fan. If both are silent for long periods, suspect a control or compressor issue.
  • Check condenser coils: Pull the unit out and inspect the condenser coils. Clean with a vacuum and brush if clogged with dust.
  • Inspect for frost pattern: Remove the freezer rear interior panel. If the evaporator has no frost at all while the compressor is running, there may be a sealed system problem (refrigerant leak or compressor failure).
  • Power reset: Unplug for 10 minutes and restore power to clear control glitches.
  • Call a professional: If the compressor does not run or there is no frost pattern, a technician must check compressor operation, refrigerant charge, and the main PCB.
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Repair Difficulty

Professional Required 5/5

Required Part

Inverter Compressor
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