Kenmore freezer displays E3; compressor may short-cycle or run continuously; temperature control seems erratic.

Safety first: Unplug the freezer before removing the control panel or display housing.

Steps to address E3:

• 1. Locate the ambient sensor: On many Kenmore freezers with digital controls, the ambient thermistor is located near the control/display panel or in the grille area where it can sense room temperature.
• 2. Remove control housing: Carefully remove screws or clips holding the control panel. Gently pull it forward to access the wiring and sensors.
• 3. Inspect the sensor and wiring: Look for discoloration, cracked sensor body, or pinched wires. Ensure the connector is fully seated on the control board.
• 4. Test the thermistor: Disconnect the sensor and measure resistance at room temperature. Compare to expected values (often 5k–10k ohms at ~77°F). Replace if open, shorted, or far out of range.
• 5. Replace if needed: Install a new ambient thermistor compatible with your Kenmore model. Route the wiring as originally installed and secure it away from sharp edges.
• 6. Reassemble and test: Reinstall the control panel, restore power, and verify that E3 clears and that the freezer cycles normally over several hours.

When to seek service: If the sensor tests correctly and wiring is intact, the main control or display board may be defective and should be evaluated by a professional.