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Fridge 45-55 degrees (not cooling)

Refrigerator 45-55 degrees - Not cooling, defrost panel fault

Samsung · Refrigerators

What does Fridge 45-55 degrees (not cooling) mean?

The Refrigerator temperature fluctuates between 45 and 55 degrees Fahrenheit, failing to maintain its set temperature of 38 degrees. This recurring problem has previously required a defrost panel replacement, suggesting a chronic issue with the defrost system.

Common Causes

  • Defective defrost heater or thermostat
  • Evaporator fan not running due to ice buildup or failure
  • Control board issue affecting defrost cycles
  • Poor door seal allowing warm air to enter

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Unplug the Refrigerator and perform a complete manual defrost for 24-48 hours to eliminate any ice buildup.

  2. 2

    Check for any ice accumulation on the evaporator coils or fan in the freezer section, as this can impede Refrigerator cooling.

  3. 3

    Ensure the Refrigerator door seals properly all around its frame, without gaps or damage.

  4. 4

    If the temperature issue persists, a technician will need to test the defrost components (heater, thermostat, sensor) and potentially the main control board.

Browse all codes in this manual (117)
Verified technical data. Last updated: April 2026

Related Faults

#5 IM Function error#5 IM Function error - Ice maker malfunction1Error 1 / I/M-sensor — Ice maker compartment sensor issue1 and 5Error 1 and 5 - Ice maker removed, causing codes and operational issues
Source: Samsung Refrigerators
Open Manual (Page 64)Search more codes in this manual