1E
Samsung Refrigerator Sensor Communication Error

Refrigerator display shows 1E or IE and beeps; cooling may stop or be erratic.

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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

Power interruption not reset, Main PCB glitch, Display PCB communication error, Loose harness connection

How to Fix / Troubleshooting

Safety first: You will not be working on live wiring for the basic reset, but always unplug the refrigerator before removing any panels.

Step 1 – Try a soft reset:

  • Press and hold the Power Freeze and Power Cool buttons together for 8–10 seconds until the display chimes and resets.
  • If the code clears and cooling resumes, monitor the unit for 24 hours.

Step 2 – Power cycle the refrigerator:

  • Unplug the refrigerator (or switch off the dedicated breaker).
  • Wait at least 5 minutes to allow the main PCB to discharge.
  • Plug back in and check if the error returns.

Step 3 – Inspect wiring to the display and main PCB (advanced):

  • Unplug the unit.
  • Remove the upper rear access cover to expose the Main PCB.
  • Check all wire harness connectors for the display and sensors; reseat any loose connectors.
  • Look for burnt spots or swollen capacitors on the PCB. If present, the Main PCB should be replaced.

When to call a technician: If the 1E code returns immediately after reset and wiring looks intact, the fault is likely on the Main PCB or Display PCB, which should be diagnosed and replaced by a qualified technician.

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Repair Difficulty

Medium 3/5

Required Part

Main PCB (Main Control Board)
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