Small, hollow or slow ice cubes almost always mean the ice maker isn’t getting enough water. The usual causes are a clogged water filter, low water pressure, a partially frozen fill tube, or a weak inlet valve. Here is how to track it down.
The usual causes
- Clogged filter: the most common cause — replace it every 6 months
- Low water pressure: under 20 psi starves the fill
- Partially frozen fill tube: restricts water into the mold
- Weak inlet valve: doesn’t open fully
Try this first
Replace the water filter and check the shutoff valve is fully open. If cubes are still small, the fill tube may be icing up — a warm freezer or a defrost issue can cause that.
When to call
If a fresh filter and good pressure don’t fix it, the inlet valve or ice maker module likely needs service ($150–$400). We test the water path and replace the failed part, with the price first.
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