L1
Sharp
Low Temperature / Overcooling Fault
Display shows L1 or LO; interior temperature is excessively low and items may be over-frozen or ice crystals form on packaging.
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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 or shorted temperature sensor reading too warm, Main control PCB relay stuck in ON position, Incorrect temperature setting or child lock misconfiguration, Faulty thermostat (on mechanical models)
How to Fix / Troubleshooting
Safety: Unplug the freezer before accessing controls or sensors.
Steps:
- Check settings: Verify that the temperature is not set to the coldest setting unintentionally. Disable any fast-freeze or super-freeze mode.
- Sensor check: If the unit has an electronic control, test the freezer thermistor as described for E1. A sensor that reads too high resistance may cause the control to overcool.
- Mechanical thermostat: On models with a rotary thermostat, turn the knob to a warmer setting and listen for the compressor to stop. If the compressor never stops, the thermostat contacts may be stuck closed and require replacement.
- Control board: If sensors and thermostat are good but the compressor runs almost continuously, the main PCB relay may be welded closed. Inspect and replace the board if necessary.
After adjustment or repair: Allow 24 hours for temperatures to stabilize and verify that the interior temperature matches the set point.
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Repair Difficulty
Medium
3/5
Required Part
Thermostat or Freezer Temperature Sensor
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