Samsung Refrigerator Error Code FRENCH DOOR ICE ROOM SENSOR

The French Door Ice Room Sensor error on a Samsung refrigerator indicates a fault in the thermistor responsible for monitoring the temperature inside the ice room compartment. This sensor communicates temperature data to the main PCB, and the control board flags an error when it detects an open circuit, a short circuit, a connector failure, or a temperature reading that falls outside the acceptable operating range of -58°F to 122°F. When any of these conditions are present, the refrigerator cannot reliably regulate ice room temperature, which can affect ice production and storage.

The diagnostic process begins at the main PCB sensor connector, where the voltage output should read between 4.5V and 1.0V under normal operating conditions. A voltage reading outside this window points to a fault in the sensor circuit. A reading near 5V typically indicates an open circuit or broken wire, while a reading near 0V suggests a short circuit. Connector corrosion, damaged wiring harnesses, or a failed thermistor element can all produce out-of-range voltage readings.

In terms of component involvement, the ice room thermistor is a passive resistive sensor whose resistance changes with temperature. When the resistance value drifts beyond expected parameters due to physical damage, moisture intrusion, or component aging, the voltage signal at the PCB connector shifts accordingly and triggers the error. Technicians should inspect the wiring harness for pinched or frayed sections, verify connector seating, and test thermistor resistance directly before concluding the sensor itself has failed.