Frigidaire Refrigerator Error Code Er rt

Er rt indicates that the refrigerator's control board has detected a short circuit or an open circuit in the room temperature sensor circuit. The sensor is a thermistor that monitors ambient temperature and sends that data to the control board. When the board receives a signal that falls outside the expected resistance range, it displays this error code. The issue may be in the sensor itself, its wiring, or its connector.

Operating the refrigerator with an Er rt code is not recommended for extended periods. Without accurate room temperature data, the control board cannot properly regulate cooling cycles, which may result in food stored above safe temperatures. Check the actual temperature inside the refrigerator with a thermometer, and if it is not maintaining safe levels, transfer perishable food and address the repair promptly.

Unplugging the refrigerator for a few minutes and restoring power may temporarily clear the error code, but the code will return if the underlying sensor fault is still present. A reset does not repair a failed thermistor, damaged wiring, or corroded connector. To permanently clear the code, the root cause in the sensor circuit must be identified and corrected.

Many technicians and experienced DIYers can address this error by inspecting and reseating the sensor connector, which requires no special tools. If the connector is secure, testing the thermistor with a multimeter to check its resistance is the next step. Replacing the room temperature sensor is a relatively straightforward repair if the sensor tests as faulty. However, if the control board is the root cause, that replacement is more involved and may warrant a professional.

If only the room temperature sensor needs replacement, parts typically cost in the range of $15 to $50 depending on the model, with labor adding $75 to $150 if a technician performs the repair. If the wiring harness requires repair or replacement, costs can run somewhat higher. A control board replacement, if needed, is the most expensive scenario and can range from $150 to $350 or more for parts and labor combined.