Freezer temperature fluctuates widely, sometimes freezing too hard and other times too warm.

Safety: Unplug the freezer before handling sensors or the control board.

• 1. Monitor with thermometer: Place a thermometer inside and log temperature over 24 hours to confirm fluctuations.
• 2. Inspect sensors: Locate freezer and evaporator NTC sensors and ensure they are firmly attached and not moving freely.
• 3. Check connectors: Reseat sensor connectors on the PCB and inspect for corrosion or loose pins.
• 4. Reduce door openings: In hot, humid environments, frequent door openings can cause swings; adjust usage patterns.
• 5. Replace suspect sensor or board: If fluctuations persist, replace the freezer NTC sensor first. If no improvement, the main control board may need replacement.

Note: Stable temperature is critical for food safety; address erratic behavior promptly.