Bosch Defrost Drain Blockage / Internal Leak

Water pooling at the bottom inside the freezer or on the floor in front.

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Possible Causes

Clogged defrost drain hole, Frozen drain tube, Cracked drain pan, Excessive frost causing overflow

How to Fix / Troubleshooting

Safety: Unplug the freezer before defrosting or working near water.

Steps:

  • Locate drain: Inside the freezer, remove drawers and the rear panel to find the defrost drain hole beneath the evaporator.
  • Clear blockage: Use warm water and a plastic tube or turkey baster to flush the drain until water flows freely to the rear drip tray.
  • Check rear drain tube: From the back, ensure the drain tube leading to the drip tray is not kinked or frozen. Thaw gently with warm water if needed.
  • Inspect drip tray: Verify that the tray above the compressor is not cracked or overflowing.
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Repair Difficulty

Easy 2/5

Required Part

Defrost Drain Tube
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