How to Fix / Troubleshooting

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

Steps:

1. Verify settings: Confirm the temperature is not set to the coldest level. Adjust to a warmer setting and monitor for 24 hours.
2. Check sensor placement: Ensure the freezer thermistor is properly clipped to the evaporator or liner and not touching the heater or exposed to warm air leaks.
3. Calibrate with thermometer: Place an accurate freezer thermometer inside and compare readings to the display. A large discrepancy suggests sensor or control issues.
4. Replace thermistor: If the sensor is suspected, install a new Panasonic freezer thermistor.
5. If still overcooling: The main PCB relay may be stuck on; board replacement is required.

Freezer overcooling, food freezing harder than usual, temperature below setpoint

Possible Causes