Kenmore Refrigerator Error Code E rS

E rS indicates a refrigerator compartment temperature sensor error. The main control board has detected a short, open circuit, or abnormal resistance reading from the thermistor responsible for monitoring the fridge compartment temperature. The fault can originate from a loose wiring connection at the main PCB connector CON7, a failed sensor, damaged wiring, or in rarer cases, the control board itself.

The refrigerator may not maintain accurate or consistent temperatures when the sensor circuit is faulted, since the control board relies on that sensor reading to regulate cooling. Check the actual compartment temperature with a standalone thermometer. If the fridge is not holding 35 to 38 degrees Fahrenheit, perishable food should be moved to a working unit or kept with ice until repairs are completed.

If only the connector needs to be reseated or cleaned, the repair can cost nothing beyond your time. A replacement refrigerator thermistor typically runs in the range of $15 to $50 for the part. If professional labor is involved, total repair costs including diagnosis and installation generally fall in the range of $100 to $250, depending on your location and whether additional components like the main PCB also need attention.

Many cases of E rS are caused by a loose connector at CON7 on the main PCB, which a handy homeowner or technician can inspect and reseat without special tools. If the connector is secure, testing the sensor resistance with a multimeter will confirm whether the thermistor has failed and needs replacement. Wiring harness repairs or main board replacement are more involved and may warrant professional service.

A power reset by unplugging the refrigerator for a few minutes may temporarily clear the error, but the code will return if the underlying sensor circuit fault is not corrected. Resetting is useful to confirm the fault is active and repeatable, but it is not a repair. The connector, sensor resistance, and wiring all need to be checked and addressed.