Sub-Zero ice maker repairacross South Florida.
UC-15 undercounter machines, the ice maker modules inside BI and Classic built-ins, PRO-series systems — Sub-Zero ice is its own discipline, and it's one our senior refrigeration techs work every week. $59 diagnostic free with repair, same-day dispatch across Miami-Dade, Broward, and Palm Beach.
- 18Full-time techniciansNot subcontractors
- 4.79From 871 verified reviewsGoogle, Yelp & other platforms
- $59Diagnostic visitCredited to your repair
- 70Cities coveredMiami-Dade · Broward · Palm Beach
- PriorityMost visits booked <1 hourOpen 7 days · 7 AM – 9 PM
- 90-dayWarranty on labor & partsLicensed & insured
Two different machines: built-in modules vs the UC-15
Sub-Zero ice problems come in two distinct flavors, and the first job of a correct diagnosis is knowing which machine you actually own. Most Sub-Zero owners have an ice maker module — the assembly living inside the freezer compartment of a BI, Classic 600-series, PRO, or Designer unit. It's a compact system: a fill valve at the back wall, a mold with ejector fingers, a module motor, and a bin with level sensing. When it fails, the refrigerator keeps working perfectly; you just stop getting ice. The second machine is the UC-15 — Sub-Zero's dedicated 15-inch undercounter ice machine, a fundamentally different appliance with its own refrigeration system, water pump, and drain requirements (gravity or pump-model, which matters enormously for diagnosis).
The distinction drives everything downstream. A BI-36 that stopped making ice usually needs module-level work — ejector fingers stalled, a fill valve that no longer seats, a cracked harness clip, or a control board that stopped powering the circuit. The OEM module matters here: the universal replacements don't communicate properly with Sub-Zero's control board, which is why we install the genuine assembly and the harness hardware that ships with it. A UC-15 producing thin, cloudy, or no ice is a different conversation: scale on the evaporator plate, a tired circulation pump, a fouled condenser, or — in South Florida garages — an ambient-heat problem the machine was never specced to fight.
Water is the through-line in both stories. South Florida's hard water scales fill valves, clouds cubes, and chokes the UC-15's water path on an accelerated schedule, and a clogged or aging filter (the 4204490 on most built-ins) is behind a surprising share of 'broken ice maker' calls. We test water pressure and flow before condemning hardware — a $40 filter fixing a 'failed' ice maker is a weekly event on our schedule.
Diagnosis by measurement, repair from truck stock
An ice maker visit runs like every Berne diagnostic: measurements before conclusions. On built-in modules we verify fill-valve actuation and volume, watch a harvest cycle, test the module motor and ejector travel, and check bin sensing — in that order, because the failure distribution follows that order. On UC-15s we read production rate against spec, inspect the evaporator plate for scale, test the pump, and check condenser airflow and ambient conditions. The $59 service call covers the full diagnosis and is free if you approve the repair.
Parts logistics favor speed: ice maker modules for the common BI and Classic generations, fill valves, 4204490 filters, and harness clips ride on the senior-rotation trucks, so most built-in module repairs close in a single visit. UC-15 components and less-common legacy parts come through Sub-Zero's distributor, typically 2-3 business days. Everything we install carries the 90-day parts and labor warranty, and the work is logged against your unit's service history — so the next tech who visits knows exactly what's been done.
Sub-Zero ice maker repair — failures we see.
Documented from the platform, not a brochure.
The classic 8-10-year failure: fingers freeze mid-rotation, the mold stays full, ice production stops cold. Sometimes a one-time jam from a fused cube pair; usually a worn module motor or stripped cam. We replace with the Sub-Zero OEM module — the universal aftermarket units don't talk to the control board correctly — plus the harness clip that nearly always cracks on removal.
A weeping fill valve overfills the mold; the spill freezes into a sheet at the bin bottom and the harvest mechanism jams against it. Owners report 'one giant block instead of cubes.' Valve replacement plus a manual clear and a flow test, and we check inlet pressure since high house pressure accelerates the next failure.
A dry mold means the water never arrived: a dead fill valve coil, a clogged 4204490 filter, a kinked or scaled supply line, or the saddle valve at the wall barely cracked open. We trace the path end-to-end in one pass — and replace the cheap part when the cheap part is the answer.
On the undercounter machine, degraded ice almost always means scale on the evaporator plate or a circulation pump losing flow. South Florida water makes this a maintenance rhythm, not a one-time event. We descale the system, service the pump, and set you up with a realistic cleaning interval — garage installs need it twice as often.
A UC-15 in a 95°F garage or pool cabana fights head pressure the spec sheet never promised to handle. Production drops in summer exactly when demand peaks. A condenser cleaning recovers real capacity; beyond that, we'll tell you honestly what the install location costs you and whether relocation or supplemental ventilation makes sense.
Built-in modules sense bin level mechanically or electronically depending on generation; a stuck arm or failed sensor either halts production with a half-empty bin or overfills until cubes jam the chute. Quick diagnosis, inexpensive fix, and frequently misdiagnosed as a dead module by shops that don't know the platform.
Taste complaints trace to an expired filter, a biofilm-coated bin, or — on UC-15s — a water path overdue for sanitizing. We replace the filter, sanitize the path and bin, and check that the freezer compartment isn't transferring odors. If your ice has been off for months, the fix is cheaper than you think.
When fill, module, and sensing all test healthy but nothing runs, the control board's ice-circuit relay is the remaining suspect — a known aging pattern on the 715549-generation boards. We confirm by measurement before quoting a board, because boards are the expensive answer and deserve the burden of proof.
Typical Sub-Zero ice maker repair costs.
| Repair | Typical range | Notes |
|---|---|---|
| Diagnostic visit | $59 | Free with repair |
| Water filter replacement + flow test | $80–$140 | Filter included; 15 minutes |
| Fill valve replacement | $180–$320 | Most common single fix |
| OEM ice maker module (BI / Classic) | $350–$600 | Genuine Sub-Zero assembly + harness |
| UC-15 descale + water-path service | $200–$350 | Restores production & clarity |
| UC-15 pump replacement | $300–$500 | Includes descale of the path |
| Control board (ice circuit failure) | $450–$700 | Only after measured confirmation |
Ranges reflect typical South Florida jobs, parts plus labor, before any access complications. You get an exact written quote after the $59 diagnostic — which is free with whichever repair you approve. 90-day parts and labor warranty on all of it.
Specialists for Sub-Zero at Berne.
The technicians on the Berne roster who carry Sub-Zero factory training, model-specific parts on the truck, and the diagnostic habit Sub-Zero platforms reward.
More Sub-Zero resources
Sub-Zero ice maker repair — questions we get
My Sub-Zero stopped making ice but the fridge works fine. What's likely wrong?
That's the normal failure pattern — the ice maker module is its own subsystem, so the refrigerator keeps running when it dies. The usual suspects, in order: a stalled module (ejector fingers / motor), a failed or weeping fill valve, a clogged filter starving the fill, or bin sensing stuck in the 'full' state. Each one is testable, and the diagnosis happens on the first visit.
Should I replace the ice maker module myself with an aftermarket unit?
We'd advise against the aftermarket route on Sub-Zero specifically. The universal modules don't communicate correctly with Sub-Zero's control board — they'll often run a few cycles and then misbehave in ways that look like a board failure. The OEM assembly costs more but works with the unit's control logic and is the only version we'll warranty.
How much does Sub-Zero ice maker repair cost?
Most jobs land between $180 and $600 depending on the failure: fill valves in the $180-$320 range, OEM module replacements $350-$600, UC-15 descale and pump work $200-$500. The $59 diagnostic is waived with an approved repair, you approve a written quote before any part goes in, and everything carries our 90-day warranty.
Do you service the UC-15 undercounter ice machine?
Yes — both the gravity-drain and pump models, which fail differently and are diagnosed differently. Scale management is the heart of UC-15 ownership in South Florida; we descale, service pumps and valves, clean condensers, and will give you an honest read on garage and outdoor-kitchen installs that run hot.
Why is my Sub-Zero ice cloudy or shrinking?
Cloudy or thin ice is a water story: an expired filter, scale in the fill path, or on UC-15s a scaled evaporator plate that can't freeze clear layers. Occasionally it's a freezer running slightly warm, which we check while we're there. It's almost never a reason to replace hardware beyond the filter and a descale.
Can you come today? The bin's empty and we're hosting this weekend.
Call before noon and same-day is usually achievable — ice maker calls route to the senior refrigeration techs already crossing Miami-Dade, Broward, and Palm Beach daily. Module and valve repairs typically close in one visit from truck stock, so 'fixed before the party' is a realistic outcome, not a slogan.
Request a callback — or just call us.
Open 7 days. Priority scheduling — most visits booked within the hour.
- Phone(754) 345-4515
- HoursOpen 7 days · 7 AM – 9 PM
- Service areaMiami-Dade · Broward · Palm Beach
High-end appliance down? $59 brings a factory-trained specialist to your door.
Call, book online, or text us — priority scheduling for Sub-Zero, Wolf, Miele, Thermador and Viking.