A plain-language snapshot of LED 3 flickers for Kenmore Refrigerator — confirm the model series before you act.
Written by
Lena Hart Appliance Repair Content SpecialistPublished October 20, 2026
Content statusVerified
Error codeLED 3 flickers
ApplianceRefrigerator
Quick answer
Three flickers of the main control board LED mean a defrost temperature sensor failure on Kenmore top-freezer refrigerators starting 111.
Model compatibility
Kenmore reuses codes across series and model years, so LED 3 flickers may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What thiscode means
Defrost temperature sensor failure.
Three flickers of the LED on the main control board mean the defrost temperature sensor has failed. The code is for Kenmore top-freezer refrigerators with model numbers starting 111.
What this sensor does
According to the manual, the defrost temperature sensor monitors evaporator temperature.
Manual checks
Unplug the refrigerator and examine the wiring between this sensor and the control board. Repair broken wires if there are any. After that, a technician measures resistance through the defrost sensor circuit from the control board and replaces the sensor if the reading falls outside the manual’s range. The defrost temperature sensor is the part listed.
Getting the count right
The LED is only visible with the control board cover removed. Keep clear of everything inside the refrigerator during that time, as the board is connected to electricity while the refrigerator is plugged in, and refit the cover once you have counted.
Related codes
Compare with LED 2 flickers for the ambient temperature sensor and LED 6 flickers for defrost heater failure. Another defrost message is r dH where the sensor did not rise above 40 F.
Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Get started
Seeing this code onyour Kenmore appliance?
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