Sub-Zero
Internal Drainage Problem
Water accumulates inside the ice bin or under the evaporator instead of draining properly.
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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
Clogged internal drain, Improper drain hose slope, Frozen drain line, Failed drain pump (if equipped)
How to Fix / Troubleshooting
Safety: Disconnect power. Water may spill when clearing drains.
Steps to restore drainage:
- 1. Clear internal drain: Remove the bin and locate the drain opening. Flush with hot (not boiling) water and use a small brush to remove debris.
- 2. Check hose routing: Ensure the drain hose slopes continuously downward to the household drain with no sags that can trap water.
- 3. Thaw frozen drain: If the drain line is frozen, allow the unit to defrost with power off and door open. Do not use open flames or high heat.
- 4. Test drain pump: For models with a pump, listen for pump operation during drain. If silent or weak, the pump may need replacement.
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Repair Difficulty
Medium
3/5
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