Electrolux Freezer Error Code All LEDs lit (temperature display)

All LEDs lighting up simultaneously on the temperature display indicates the control board has detected that the NTC temperature sensor is reporting a value outside the valid range of -35°C to +40°C. This is treated as a sensor defect, meaning the board cannot trust the reading to control the compressor normally. As a protective measure, the compressor runs on a fixed cycle of 30 minutes on and 45 minutes off until the fault is resolved. The alarm will reset automatically if the sensor reading returns to a valid range.

The freezer does continue to run in a protective fixed compressor cycle (30 minutes on, 45 minutes off) when this fault is active, which provides some cooling. However, the unit is no longer regulating temperature based on actual sensor feedback, so internal temperatures may fluctuate outside the safe range for frozen food storage. It is advisable to monitor food condition and have the sensor fault diagnosed and repaired promptly rather than relying on the fallback cycle for an extended period.

Repair costs vary depending on what component is at fault. If the fix involves only cleaning or reseating a corroded connector, costs may be limited to a service call fee in the range of $75 to $150. Replacing an NTC sensor typically adds $20 to $80 in parts cost. If a control board replacement is required, parts alone can range from $100 to $300 or more, with total repair costs including labor potentially reaching $250 to $500 depending on your location and the service provider.

Start by checking the NTC sensor's resistance at its connector terminals and comparing that reading against the resistance-temperature table for the unit. Also inspect the wiring harness and connectors between the sensor and control board for corrosion, damage, or loose connections. If the sensor resistance is out of spec, replacing the sensor is typically the required fix. If the sensor measures correctly but the fault persists, the control board may need to be evaluated.

Simply power cycling the freezer will not permanently clear this fault if the underlying sensor problem remains. The alarm is designed to reset automatically only when the NTC sensor returns a reading within the valid -35°C to +40°C range. If the sensor, wiring, or connector is defective, the error will return immediately or shortly after a reset because the fault condition still exists.