Lo
EdgeStar Low Temperature Setpoint Limit / Display Under-Range

Display shows Lo for temperature and will not allow setting below a certain point.

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Possible Causes

Normal minimum setpoint limit reached, Faulty thermistor reading below display range, Control board calibration issue

How to Fix / Troubleshooting

Safety: No immediate hazard. If you open the cabinet or access wiring, unplug the unit first.

Steps:

  • Understand the limit: Many EdgeStar wine coolers will display Lo when you attempt to set a temperature below the designed minimum (e.g., 40°F). This is normal behavior.
  • Verify actual temperature: Place a thermometer inside. If the interior is much colder than expected (e.g., near freezing), there may be a sensor or control issue.
  • Inspect and test thermistor: If the unit is overcooling, follow the thermistor testing steps from the E0/E9 procedures and replace if faulty.
  • Control board check: If the sensor is good but the display still shows Lo with abnormal cooling, the control board may be miscalibrated and require replacement.

Note: If temperatures are normal and only the display shows Lo at the minimum setting, no repair is necessary.

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Repair Difficulty

Easy 2/5

Required Part

Cabinet Temperature Sensor (Thermistor)
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