Wine cooler shows E2 and does not cool properly or cycles erratically.

Safety warning: Always disconnect power before opening any panels. Sharp metal edges are present inside the cabinet.

Steps to address E2:

• Reset the unit: Unplug for 5–10 minutes and plug back in. If E2 reappears, proceed.
• Access the evaporator area: Remove interior shelves and the rear interior panel to expose the evaporator coil. The evaporator thermistor is usually clipped directly to the coil or nearby tubing.
• Inspect sensor placement: Ensure the sensor is firmly attached to the evaporator coil and not hanging loose. A loose sensor can cause incorrect readings and E2 errors.
• Check wiring: Follow the sensor wires from the evaporator to the cabinet pass-through and then to the control board. Look for cuts, pinches, or signs of moisture damage.
• Test the sensor: With a multimeter, measure resistance at room temperature and compare to the cabinet thermistor (they are often similar). If the reading is open, shorted, or drastically different from expected, the sensor is likely bad.
• Replace the evaporator thermistor: Install a Whynter-compatible evaporator sensor, clip it securely to the coil, and route the wiring away from sharp edges and moving parts.
• Reassemble and test: Reinstall the interior panel and shelves, restore power, and monitor for several cooling cycles to confirm the E2 code is gone.

Note: If the sensor is good but E2 persists, the main control board may not be interpreting the signal correctly and may need replacement.