Refrigerator displays error code E1 and the fresh food compartment temperature is too high while the freezer may still be cooling.

Safety first: Disconnect the refrigerator from mains power before removing panels or testing components. Do not work on live circuits.

Step-by-step checks:

• 1. Power reset: Unplug the refrigerator for 5–10 minutes, then reconnect. If E1 returns within a few minutes, continue with diagnosis.
• 2. Locate the fridge sensor: The Fagor refrigerator compartment NTC is usually clipped to the liner wall behind a small plastic cover or inside the air duct at the rear of the fresh food section. Remove shelves as needed and gently unclip the cover.
• 3. Inspect the sensor and wiring: Check for corrosion on the sensor connector, broken insulation, or signs of moisture ingress. Reseat the connector firmly.
• 4. Test the sensor (if you have a multimeter): With the fridge still unplugged, disconnect the sensor from the harness and measure resistance across the two sensor pins. At around 25°C, most Fagor NTC sensors read roughly 5–10 kΩ (exact value varies by model). A reading of 0 Ω (short) or infinite (open) indicates a bad sensor.
• 5. Check continuity to the main PCB: If the sensor tests OK, check continuity of the two wires from the sensor connector to the main control board (usually located at the rear, behind a metal or plastic cover). Repair any damaged wiring or loose connectors.
• 6. Replace the sensor if faulty: If resistance is out of range or unstable when gently warmed with your hand, replace the refrigerator compartment NTC sensor with a compatible Fagor part. Clip it back in the original position and route the wiring as originally installed.
• 7. Consider main PCB: If a new sensor and good wiring still result in E1, the main electronic control board may be defective. Replacement typically requires removing the rear control cover, labeling connectors, and swapping the board. If you are not comfortable with electronics, contact a qualified technician.