SPT Refrigerant System Failure / Loss of Charge

Unit runs but makes no ice; evaporator plate does not get cold.

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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 in evaporator or tubing, Blocked capillary tube, Weak compressor, Crimped refrigerant line

How to Fix / Troubleshooting

Safety first: Do not attempt to open the sealed refrigeration system without proper certification.

  • Check evaporator temperature: After 10–15 minutes of operation, carefully touch near (not directly on) the evaporator plate. It should be very cold and may frost. If it remains at room temperature, there is a cooling system issue.
  • Listen to compressor: Confirm the compressor is running (low humming sound and slight vibration). If it runs but no cooling occurs, refrigerant may be low or the compressor is weak.
  • Inspect for oil stains: Look around tubing joints and the evaporator for oily residue, which can indicate a refrigerant leak.
  • Professional service: Refrigerant charging, leak detection, and compressor replacement require specialized tools and must be done by a licensed refrigeration technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Sealed Refrigeration System
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