Freezer temperature fluctuates widely; sometimes too warm, sometimes too cold.

Safety first: Unplug the freezer before accessing controls or wiring.

Steps to stabilize temperature:

• 1. Check loading and vents: Ensure air vents inside the freezer are not blocked by food packages. Allow space for air circulation.
• 2. Monitor with thermometer: Place a thermometer inside and log temperatures over 24–48 hours to confirm fluctuations.
• 3. Inspect thermostat or sensor: For mechanical models, replace a thermostat that cycles erratically. For electronic models, test and reseat the thermistor connections.
• 4. Examine control board: Look for loose connectors or signs of overheating. Replace the board if intermittent faults are suspected.

Note: Some variation is normal during defrost cycles, but large swings indicate a control issue.