Samsung Refrigerator 25E Error Code: Fridge Defrost Sensor Fault Fix

Samsung 25E is the fridge-side defrost sensor fault on models with separate fridge and freezer defrost circuits - a design feature not universal across Samsung models. French door refrigerators (RF28, RF32 series) typically have independent defrost heaters for the freezer evaporator and a secondary heater for the refrigerator evaporator section, and 25E fires when the fridge-side sensor fails. The Samsung-specific repair insight is that 25E follows the same diagnosis path as 39C but targets the fridge evaporator panel rather than the freezer rear panel - the fridge evaporator is behind the rear wall of the fresh food compartment, not the freezer. Samsung service mode (Energy Saver + Fridge for 8 seconds) displays both the fridge and freezer sensor readings separately, making it possible to distinguish 25E from 39C without removing any panels. The 25E repair is less common than 39C because the fridge evaporator sees less thermal stress than the freezer, but the fix is parallel - defrost manually, replace the fridge defrost sensor, and replace the fridge defrost heater assembly if it failed.