Frigidaire Refrigerator Error Code Er rS

Er rS indicates a refrigerator compartment sensor error caused by either a short circuit or a disconnection in the refrigerator temperature sensor circuit. The control board monitors the thermistor's resistance to regulate cooling, and when that resistance falls outside the expected range, this code is triggered. The refrigerator may cool improperly or inconsistently while the error is active.

The refrigerator may continue running, but without an accurate temperature reading the control board cannot regulate cooling correctly. This means food temperatures could rise into unsafe ranges without any obvious warning. It is best to check and transfer perishable food while diagnosing the issue, rather than assuming the compartment is maintaining a safe temperature.

A power reset may temporarily clear the display, but if the underlying fault in the sensor or wiring still exists, the code will return once the control board runs its diagnostic checks again. A reset alone does not fix a disconnected wire or a failed thermistor. The root cause must be identified and corrected for the error to stay cleared.

Some causes of Er rS are DIY-friendly. Start by checking that all sensor wire connectors are fully seated and free of corrosion, which requires no parts and no special tools. If the wiring is intact, testing the thermistor with a multimeter requires basic electrical knowledge. Replacing the thermistor is a straightforward repair for someone comfortable working inside a refrigerator, but control board replacement is better left to a technician.

If the fix is simply reseating a connector, there is no parts cost involved. A replacement thermistor typically costs between $15 and $50 for parts. If a technician is needed for diagnosis and repair, total costs including labor generally range from $100 to $250 depending on your location and whether additional components like the control board are involved.