L1
Vissani Low Temperature Alarm / Overcooling Condition

Display shows L1 or LO; interior may be excessively cold, and some items may be freezer-burned.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Stuck-closed temperature sensor reading, Control board not cycling compressor off, Thermostat calibration error, Sensor misplaced or not sensing cabinet air correctly

How to Fix / Troubleshooting

Safety: Overcooling is generally not a safety hazard but can waste energy and damage food quality.

Steps:

  • Check setpoint: Verify that the temperature setting is not at the coldest position. Adjust to a warmer setting and monitor for several hours.
  • Inspect sensor placement: Ensure the cabinet temperature sensor is properly mounted in its holder and not touching the evaporator or walls directly, which can cause false low readings.
  • Power reset: Unplug the freezer for 5–10 minutes, then restore power to clear any control glitches.
  • Monitor operation: If the compressor runs nearly constantly even at a warmer setting, the control board or sensor may be faulty.
  • Replace components: Test and replace the cabinet temperature sensor first. If overcooling persists, replace the main control board.
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Repair Difficulty

Medium 3/5

Required Part

Cabinet Temperature Sensor (NTC Thermistor)
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