E10 error with continuous alarm beeping; freezer may show very high or very low temperature readings that do not match actual conditions.

Safety: Unplug the freezer before removing panels or sensors.

Steps:

• 1. Compare with a thermometer: Place an accurate freezer thermometer inside and compare the displayed temperature to the actual reading.
• 2. Check sensor placement: Ensure cabinet and evaporator sensors are properly clipped to their mounting points and not hanging free in air unless designed that way.
• 3. Inspect recent repairs: If a sensor was recently replaced, verify that the correct Belling part number was used. Incorrect NTC values can trigger E10.
• 4. Test sensors: Measure resistance at known temperatures (e.g., ice water at 0°C) and compare to expected values. Replace any suspect sensors.
• 5. PCB fault: If all sensors test correctly and are correctly installed, the main PCB's measurement circuit may be faulty and require replacement.

Note: Document sensor connections with photos before disassembly to ensure correct reassembly.