Sub-Zero Ice Maker Making Small or Hollow Cubes
Ice Maker Making Small or Hollow Cubes is usually one of a small number of specific, repairable causes — here's what to check and when it's worth calling a professional.
Common Causes
Water that is not the same water as last season
Blending changes what arrives at the fill valve through the year, which is why a unit that ran clean for a year suddenly furs up.
A blocked or frozen water supply line
Shows up as slow or stopped production, and is a plumbing-side issue rather than the ice-making mechanism itself.
A worn ice maker motor or mold assembly
The mechanical components that form and eject cubes wear out gradually.
Local conditions that matter here
The supply here changes chemistry through the year as sources are blended, so what is coming out of a fill line in March is not what was coming out in September. An appliance calibrated to one blend meets another, which is why descaling intervals that held for a year stop holding.
What You Can Check Yourself
Parts That Most Likely Need Replacing
Based on symptoms like this, these are the components our technicians check first. The exact part depends on your model and what we find during diagnosis.
In and around Tampa
Tampa — Two housing stocks in one city -- 1920s bungalows and Mediterranean Revival houses in Hyde Park and Palma Ceia, and 1990s-to-2020s custom builds in Beach Park, Culbreath Isles and the New Tampa golf communities. We also cover Temple Terrace across Tampa.
ZIP codes we cover in Tampa: 33602, 33603, 33604, 33605, 33606, 33607, 33609, 33610
Most cases like this are fine to schedule within a day or two, though it's worth having looked at before it gets worse. If you're seeing a code on the display alongside this issue, our Sub-Zero error code guide can help narrow down the cause before we arrive. Either way, our repair service covers same-day diagnosis and a flat-rate quote before any work begins.
Common Questions About Ice Maker Making Small or Hollow Cubes
Can I keep using my Sub-Zero appliance while this happens?
Will ice maker making small or hollow cubes go away on its own?
How much does this repair typically cost?
How long does a typical repair visit take?
Do you offer a warranty on the repair?
Do you service Sub-Zero appliances in my area?
Still having this issue?
Same-day diagnosis, genuine OEM-compatible parts, warranty of up to 1 year.
*SubZero Repair Tampa Bay is an independent repair company and is not affiliated in any way with Sub-Zero, Inc., Wolf Appliance, Inc., or any of their distributors. We are not a factory service provider and specialize exclusively in out-of-warranty appliance repairs.