Wine cooler displays E1 and will not cool properly; interior temperature rises above setpoint.

Safety first: Unplug the wine cooler or switch off the dedicated circuit breaker before removing any panels. Use insulated tools and avoid working on live circuits.

Steps to check and address E1:

• Power reset: Disconnect power for 5–10 minutes, then restore power to see if the code clears. If E1 returns, continue.
• Locate the cabinet sensor: On most Thermador wine coolers, the cabinet/evaporator sensor is a small probe behind the rear interior liner or clipped to the evaporator coil. Remove interior shelves and trim as needed.
• Inspect wiring: Check the sensor leads for cuts, pinches, or corrosion at connectors. Reseat the connector at both the sensor and the main control board.
• Test the sensor: With power disconnected, remove the sensor connector and measure resistance with a multimeter. Compare to Thermador’s NTC chart (commonly ~5–10 kΩ at room temperature). If reading is open, shorted, or far out of spec, replace the sensor.
• Check control board input: If a known-good sensor still triggers E1, inspect the main control board for burnt components or corrosion at the thermistor input. Replacement of the board is typically required if damaged.
• Reassemble and test: Reinstall panels and shelves, restore power, and monitor temperature and display for at least 30–60 minutes.

When to call a technician: If you are not comfortable using a multimeter or accessing the control board, or if the error persists after sensor replacement, contact an authorized Thermador service technician.