Wine cooler display shows E1 and interior temperature rises above the set value; compressor does not start or cycles briefly.

Safety first: Unplug the Teka wine cooler from the mains before removing any panels. Do not work on live circuits.

• Power reset: Disconnect power for 5–10 minutes, then reconnect. If E1 returns, continue with checks.
• Locate the cabinet NTC sensor: On most Teka wine coolers, the cabinet temperature sensor is clipped to the evaporator cover or mounted on the rear interior wall behind a small plastic cover. Remove interior shelves and the rear plastic panel if needed.
• Inspect the sensor and wiring: Check for broken, pinched, or corroded wires going from the sensor to the main control PCB (usually behind the top or rear service panel). Reseat any loose connectors.
• Test the NTC sensor: With a multimeter set to resistance (ohms), measure the sensor at room temperature. Typical NTC values are around 5–10 kΩ at 25°C (consult Teka service data if available). An open circuit (OL) or 0 Ω indicates a failed sensor.
• Replace the sensor if defective: If readings are out of range, replace with a compatible Teka cabinet NTC sensor. Route the new sensor along the original path and secure it away from moving parts or sharp edges.
• Check the control PCB: If the sensor tests good and wiring is intact but E1 persists, the main control PCB sensor input may be faulty. Visually inspect the PCB for burn marks or corrosion. Replacement of the PCB is recommended and may require a qualified technician.

When to call a professional: If you are not comfortable testing electrical components or if replacing the sensor does not clear E1, contact an authorized Teka service center.