Add
Whynter Water Supply / Level Detection Issue

“Add Water” light or code stays on, ice maker will not start cycle

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Possible Causes

Reservoir not fully seated, Low water level, Faulty water level sensor, Mineral buildup on float

How to Fix / Troubleshooting

Safety: For basic checks, you may leave the unit plugged in but avoid spilling water into electrical areas. Unplug before removing panels.

Steps to clear Add Water:

  • Check reservoir: Ensure the water reservoir or tank is properly seated and filled to the correct level.
  • Inspect for kinks: If your model has a removable water bottle or tank, make sure no airlock or kink is preventing water from entering the reservoir.
  • Clean float/sensor: Remove the ice basket, locate the float or sensor, and clean off any scale or slime with warm water and vinegar.
  • Verify sensor movement: Move the float manually; the Add Water light should change state if the sensor is working (on some models you must power cycle to see the change).
  • Replace sensor: If the Add Water indicator remains on with a full reservoir and a free-moving float, 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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