Display shows E3 and the refrigerator struggles to maintain set temperature, often running continuously

Safety first: Disconnect power and wear cut‑resistant gloves when working near metal panels and sharp fins.

Step 1 – Access the evaporator area:

• Empty the freezer compartment.
• Remove the shelves and the rear inner panel (usually held by screws or clips).
• Expose the evaporator coil and locate the small sensor clipped to the tubing or fins.

Step 2 – Check sensor placement and condition:

• Ensure the sensor is firmly clipped to the evaporator; if it is hanging loose, reattach it properly.
• Inspect the wiring for cracks, brittleness, or signs of overheating.

Step 3 – Test the evaporator thermistor:

• With the unit still unplugged, disconnect the sensor connector.
• Measure resistance with a multimeter; compare to expected values for the approximate coil temperature (consult service data if available).
• Replace the sensor if readings are open, shorted, or far out of range.

Step 4 – Reassemble and test:

• Secure the new or repositioned sensor to the evaporator coil.
• Reinstall the rear panel and shelves.
• Restore power and allow several hours of operation; the E3 code should clear automatically if the fault is resolved.