Water leaking or overflowing into the ice cube storage bin is a common problem. It has several causes:

1. A bad ice cube mold (by far the most common problem).
2. A leaking water valve.
3. A tilted icemaker. This is not a frequent problem, but occasionally someone will bump or fool with the icemaker and tilt it. If it is not close to level, water will simply spill over the edge. This adjustment is not critical and can be judged by eye. A carpenter's level is not necessary.

Mold leakage occurs in two styles of icemakers:

1. Crescent style icemakers.

   As a mold ages, corrosion builds up on its surface. The corrosion forms a chemical coating that actually absorbs water. When the corrosion reaches the top of the mold, water will actually rise above the water level and drip over the top of the mold!

   This phenomenon is known as wicking.

   The corrosion acts like a candle wick and causes the mold to leak. Cleaning off the corrosion is not effective; replace the icemaker! In some cases wicking will empty the icemaker in a matter of hours.

   This problem occurs over a long period of time and gradually gets worse as the corrosion builds up. Finally, the user gets tired of discarding the lumped together cubes and calls for help. In contrast, a leaking water valve usually occurs suddenly.

   Many people have a hard time understanding and believing that this weird process is the real cause. Nevertheless, it is true. How else is water able to get over the top of a solid metal mold and drip?

2. GE Pop-up Icemakers

   GE pop-up style icemakers include a plunger that pierces the bottom of the mold. As the seals around the plunger age, water leaks through the mold into the bin. The water then forms large upside down icicles in the icemaker bin.

   It is possible, but impractical to replace the seals. Most often the surrounding metal is pitted and unsuitable for water sealing. The best solution is a new icemaker.

   The GE pop-up is the most expensive icemaker of all and can often be replaced with a newer and cheaper crescent style. The only exception is a model with a through the door dispenser. Crescent cubes tend to jam in the grinding chamber. See Manual 9: Icemakers.

Troubleshooting Icemakers
Diagnostic System