Kenmore Refrigerator Error Code Er RD — Refrigerator Defrost Error
What this means
The Er RD error code on Kenmore Elite refrigerators with dual evaporator systems indicates the fresh food (refrigerator) compartment defrost cycle did not complete. Unlike Er FD which affects the freezer, Er RD specifically refers to the refrigerator section's evaporator. Frost buildup on the fresh food evaporator reduces cooling and can cause warm temperatures in the refrigerator section.
Alternate codes: ErRD, Er rD
Step-by-step fix
4 stepsCheck for frost on the refrigerator evaporator
Locate the refrigerator evaporator — on dual-evaporator Kenmore models, there is a separate evaporator behind the rear panel of the fresh food compartment. Remove the panel and check for frost buildup.
Not all Kenmore refrigerators have a dual evaporator system. If yours has only one evaporator (in the freezer), this code should not appear.
Test the refrigerator defrost heater
Unplug the unit. Locate the fresh food defrost heater near the evaporator. Disconnect and test for continuity — it should show 20–50 ohms. An infinite reading means the heater is burned out.
The refrigerator defrost heater is a separate component from the freezer defrost heater.
Test the defrost sensor/thermostat
Check the defrost sensor or thermostat attached to the refrigerator evaporator. At room temperature, it should show continuity. Replace if it reads open.
On some models, the defrost sensor is a thermistor with a specific resistance value rather than a simple on/off thermostat.
Replace the defective component
Replace the heater or sensor that tested defective. Reassemble the rear panel and restore power.
After repair, monitor the refrigerator section temperature for 24 hours to ensure it reaches the target (37°F / 3°C).
When to call a professional
Dual evaporator systems can be complex. If you are unsure which evaporator or defrost system is affected, a certified technician can run diagnostics.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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