Refrigerator compartment too warm while compressor runs frequently; error E1 shown on display.

Safety first: Unplug the Vestfrost refrigerator from the mains before removing panels or handling wiring. Do not work on live circuits.

Steps to check and address E1 (fridge sensor):

• Power reset: Disconnect power for 5–10 minutes, then reconnect. If E1 returns after a few minutes of operation, continue with diagnosis.
• Locate the refrigerator NTC sensor: On most Vestfrost models, the fridge sensor is behind a small plastic cover on the rear interior wall or near the air outlet from the evaporator cover. Remove shelves and the cover carefully.
• Inspect the sensor and wiring: Look for broken insulation, corroded connectors, or a sensor that has come loose from its clip. Reseat the connector firmly into the harness.
• Test the sensor with a multimeter: With the fridge unplugged, disconnect the NTC sensor from the harness. Measure resistance at room temperature (around 20–25°C). Typical Vestfrost NTC sensors read roughly 4–10 kΩ at room temperature (check service data if available). If the reading is open (infinite) or shorted (near 0 Ω), the sensor is faulty.
• Check harness continuity: If the sensor tests OK, check continuity from the sensor connector to the main PCB connector using a multimeter. Repair or replace damaged wiring or corroded terminals.
• Replace the refrigerator NTC sensor: If defective, install a new Vestfrost-compatible refrigerator compartment NTC sensor, clip it back in the original position (not touching the evaporator directly unless designed to), and refit covers.
• Control board check: If a known-good sensor and wiring still trigger E1, the main control board may be misreading the sensor and should be tested or replaced by a qualified technician.

When to call a professional: If you are not comfortable using a multimeter or accessing the main PCB, contact an authorized Vestfrost service center.