Getting half-size, hollow, or crushed-looking ice from a maker that used to produce full cubes? Tiny ice cubes are almost always a water-flow problem. The ice maker is not getting enough water to fill the mold, and the fix is usually straightforward.
Here is why cubes come out small and how to restore full ones.
This article will teach you:
- Why low water makes small cubes
- The parts that restrict flow
- How to check the filter and valve
- When a part has failed
Why the Cubes Come Out Small
An ice maker fills the mold for a set time, so anything that slows the water leaves the mold half full. The usual causes are:
- A clogged water filter restricting flow to the ice maker.
- A partly closed or kinked supply line behind the fridge.
- A weak water inlet valve that does not open fully.
- Low household water pressure feeding the fridge.
What You’ll Need
- A new water filter
- Your owner’s manual
- A multimeter
How to Fix Small Ice Cubes
Start with the easiest restriction.
- Change the water filter. A clogged filter is the most common cause; replace it if it is old.
- Check the supply line. Make sure the shutoff valve is fully open and the line is not kinked.
- Test the water pressure. Dispense water and watch the flow; a weak stream points to low pressure or a weak valve.
- Inspect the inlet valve. A valve that does not open fully will underfill the mold and may need replacing.
Pro Tip: If you recently changed the filter and cubes shrank, the new filter may not be seated fully. Reseat it firmly, since a partly installed filter chokes water flow.
When to Look a Little Deeper
Because small cubes and no cubes share the same water path, it helps to check flow end to end, and reviewing why an ice maker stops making ice or clearing a frozen fill tube can reveal the restriction. Flow that surges can also cause an overfilling ice maker.
If the ice maker itself is worn, you can replace an LG refrigerator ice maker, or fit a new Whirlpool ice maker assembly.
When to Call a Pro
If the filter is fresh, the line is open, and the valve tests good but cubes stay small, a pressure or sealed-line issue may be behind it. A technician can measure flow and confirm.
Wrapping Up
Tiny cubes are a water-flow signal, not a broken ice maker. Here’s the recap:
- Replace an old or clogged water filter.
- Open and straighten the supply line.
- Check the water pressure at the dispenser.
- Test the inlet valve for full flow.
Restore the water flow and full cubes come right back. You’ve got this.