Sub-Zero Ice Bridging / Slab Not Breaking

Ice maker forms a large slab of ice that bridges across the bin instead of breaking into cubes.

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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

Harvest mechanism not cycling fully, Ice thickness set too thick, Scale causing ice to stick, Weak or failed harvest motor

How to Fix / Troubleshooting

Safety: Disconnect power before manually breaking ice or servicing the harvest mechanism.

Steps to correct bridging:

  • 1. Manually break slab: Remove the bin and carefully break up the slab into smaller pieces. Do not use sharp metal tools that can damage the bin.
  • 2. Run cleaning cycle: Descale the evaporator and water system to reduce sticking.
  • 3. Adjust thickness: If your model allows, reduce the ice thickness setting slightly.
  • 4. Inspect harvest motor: Check for proper operation and replace the motor assembly if it does not complete a full harvest cycle.
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Repair Difficulty

Medium 3/5

Required Part

Harvest Motor Assembly
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