Why is my Sub-Zero making small or hollow ice cubes?

Low water pressure, often from a clogged filter or partially closed valve, is the usual cause. Replacing the filter and checking the supply often fixes it.

Why is my Uptown condo's ice maker making small, hollow cubes?

Undersized cubes usually mean the ice maker is getting too little water. An overdue filter, a pinched supply line behind a counter-depth fridge or a weak inlet valve are the usual reasons. We test the water pressure at the valve to narrow it down.

Do you fix the door ice maker on a French-door refrigerator in an Uptown apartment?

Yes. In-door ice makers have their own fan, seals and auger, and frost buildup in the compartment often slows or jams them. The technician checks the seal, clears the frost, tests the module and explains what needs replacing.

Sub-Zero Repair

Sub-Zero Ice Maker Repair in Uptown Charlotte, NC

Sub-Zero ice maker repair in Uptown Charlotte, Mecklenburg County. We diagnose first and agree the price before any work.

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Sub-Zero Ice Makers: What We Check First

Sub-Zero ice comes from two very different machines. Most refrigerators and freezers have an automatic ice maker inside the freezer compartment, fed by a water valve and line. Separately, Sub-Zero sells undercounter ice makers that produce clear ice in a dedicated cabinet, often installed in a bar, butler's pantry or outdoor kitchen. Undercounter units need a water supply, a drain, and either gravity drainage or a drain pump.

Clogged water filter or low pressure reducing ice production
Frozen fill line stopping the in-freezer ice maker
Scale buildup on undercounter ice maker evaporators
Drain pump or drain line clog in undercounter installations

The full explanation, including what you can safely check yourself and when repair beats replacement, is in our Sub-Zero ice maker repair guide.

Water Lines Behind Built-In Refrigerators

Counter-depth and built-in refrigerators in Uptown kitchens leave very little room behind them, and the water line feeding the ice maker is often coiled, pinched or pushed against the wall when the unit is slid back. A partly crushed line or a clogged water filter starves the ice maker and produces small, hollow cubes. A fill tube that freezes shut stops production entirely, and in-door ice makers on French-door models can also suffer from a frosted chute or a weak compartment seal.

Replace the filter if it is overdue, confirm the ice maker arm or switch is on, and check that the freezer is cold enough. If your condo has a separate undercounter ice machine at a bar or island, it needs its drain clear and its front vent unobstructed.

The technician tests the inlet valve, the ice maker module and the fill tube, and inspects the line without forcing the fridge out of the cabinetry. You get the diagnosis and the price before the work starts, and if a part has to be ordered, you will know up front.