Wine cooler displays E2 and may run continuously or not cool correctly.

Safety Warning: Disconnect power before removing rear or interior panels. Sharp metal edges can cause injury; wear cut-resistant gloves.

Diagnostic steps:

• Confirm error: Clear the code by unplugging the unit for 5 minutes. If E2 reappears shortly after restart, proceed.
• Access the evaporator area: Remove interior shelves and the rear evaporator cover inside the cabinet. The evaporator thermistor is usually clipped to the evaporator tubing or mounted near the coil.
• Inspect sensor placement: Ensure the thermistor is firmly attached to the evaporator coil or bracket. A loose sensor can cause incorrect readings and trigger E2.
• Check wiring: Follow the thermistor leads back toward the cabinet wall. Look for chafed insulation, corrosion at connectors, or signs of moisture damage.
• Test thermistor resistance: With the unit unplugged, disconnect the thermistor and measure resistance. Compare to expected values for the approximate coil temperature (often lower than room temperature). A reading of OL (open) or near 0 ohms indicates a bad sensor.
• Replace evaporator thermistor: If readings are out of range, install a new Whirlpool-compatible evaporator thermistor. Clip it securely to the coil in the same location as the original to ensure accurate sensing.
• Control board evaluation: If the new thermistor and wiring are good but E2 persists, the main control board may not be interpreting the sensor signal correctly. Inspect and replace the board if necessary.

Note: Avoid bending or puncturing the evaporator tubing; this can cause refrigerant leaks and require sealed system service.