Display shows E0 and the wine cooler is not cooling properly or at all.

Safety first: Unplug the wine cooler or switch off the circuit breaker before removing panels or handling wiring.

• Power reset: Disconnect power for 5 minutes, then restore power to see if the E0 code clears. If it returns, continue.
• Access the thermistor: Inside the cabinet, locate the temperature sensor (thermistor) usually clipped to the evaporator cover or liner wall. Remove any shelves and interior panels as needed.
• Inspect connections: Check that the thermistor plug is firmly seated in its connector and that the wiring harness is not pinched, cut, or corroded.
• Test the thermistor: With the unit unplugged, disconnect the thermistor from the harness and measure resistance with a multimeter. Compare to GE’s temperature/resistance chart (typically around 10kΩ at 77°F/25°C). If it is open, shorted, or far out of range, replace the thermistor.
• Check control board: If the thermistor tests good, inspect the main control board (usually behind the rear or top panel) for burnt spots or corrosion at the sensor connector. If damaged or if the code persists with a known-good thermistor, replace the main control board.

If you are not comfortable testing electrical components, contact a qualified appliance technician.