LO
Whynter Low Water Level Detected

LO or LOW water indicator on display, unit beeps and stops making ice

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Possible Causes

Empty water reservoir, Misreading water level sensor, Float stuck in low position, Scale buildup on sensor

How to Fix / Troubleshooting

Safety: Disconnect power before removing internal covers. For simple refilling, you may leave the unit plugged in but avoid spilling water on electrical parts.

Steps to clear LO:

  • Refill reservoir: Remove the ice basket and fill the water reservoir to the indicated MAX line using clean, potable water.
  • Check for leaks: Ensure water is not draining out due to a loose drain cap or hose.
  • Inspect float/sensor: If LO persists with a full reservoir, unplug the unit and inspect the float or water level sensor for scale or debris. Clean with warm water and vinegar if needed.
  • Verify float movement: Move the float up and down; it should move freely and not stick.
  • Sensor wiring: Check the sensor harness connection to the control board and reseat it.
  • Replace sensor: If the sensor or float switch is mechanically or electrically defective, replace the water level sensor assembly.
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Repair Difficulty

Very Easy 1/5

Required Part

Water Level Sensor / Float Switch Assembly
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