Sub-Zero Over-and-Under Refrigerator Repair
Classic & Legacy Series in Seattle
Sub-Zero over-and-under refrigerator repair in Seattle. Classic, BI and legacy 600/700 series specialists. OEM parts, same-day service.
- Licensed & Insured
- Same-Day Service
- Genuine OEM Parts
- Warrantied Repairs
On an over-and-under, a warm fresh-food section above a cold freezer drawer is a textbook dual-refrigeration split, and we test each sealed system separately instead of pulling the whole unit apart. We repair Classic, BI, and legacy 600 and 700 over-and-under units across Seattle, often same-day. Call (425) 532-3360. Our service call fee is $89, applied toward the completed repair.
The over-and-under is the most classic Sub-Zero silhouette: the refrigerator up top at eye level where you use it most, and the freezer tucked into a pull-out drawer below. Sub-Zero has built this layout for decades, from the legacy 650 and 700-series units to the BI-36U and today’s Classic CL3650U. It is the configuration that put the brand in Seattle kitchens, and it is still the one we are called to most often after the plain built-in.
Like every full-size Sub-Zero, it runs dual refrigeration, so the fridge and the freezer drawer each have their own sealed system. The freezer drawer is where the ice maker usually lives, riding in the cold section on its own fill line. That drawer takes real mechanical wear over the years: the slides, the gasket, and the auto-close mechanism all cycle every time someone reaches for ice, and a drawer that no longer pulls the gasket tight will frost and sweat long before anything electrical fails.
The eye-level refrigerator section is where owners notice trouble first, because a warming fresh-food compartment is obvious at breakfast. That warmth almost never means the freezer drawer is failing too; on a dual-refrigeration cabinet the two are independent, and a solid, frozen drawer below a warm fridge tells us exactly which sealed system to open. Reading the split correctly is half the repair.
We service the over-and-under across every generation Seattle still runs. On that first call, we check both evaporator fans, read any stored fault codes, inspect the freezer-drawer track and gasket, and confirm the ice maker is getting the water pressure it needs before we quote a single part.
Models & configurations we service
The appliances we keep running
What goes wrong with over-and-under units
Fresh-food section warming, drawer still frozen
The signature over-and-under fault. Because the fridge and freezer drawer run separate sealed systems, a warm upper cabinet above a hard-frozen drawer points squarely at the refrigerator system or its evaporator fan. We confirm the split by temperature before opening anything, so the repair stays targeted.
Ice maker in the freezer drawer quitting
The drawer-mounted ice maker needs at least 40 PSI and a clear, unfrozen fill tube to harvest. Slow or empty bins usually trace to a throttled saddle valve, a frozen fill line, or a failing inlet valve rather than the ice maker head itself. We verify pressure at the unit before condemning the module.
Freezer drawer not sealing or self-closing
Years of pulling the drawer wear the slides and the auto-close mechanism, so the gasket no longer seats. The result is frost inside, sweating on the front panel, and a system that runs longer to fight the leak. We service the track, the closer, and the gasket together so the drawer pulls tight again.
Frost or ice on the freezer evaporator
A defrost heater or sensor failure lets frost build on the freezer evaporator until airflow chokes and the drawer warms. An EC24 sitting in the fault history pins it down. We check the heater, sensor, and termination as one circuit, not just the heater on its own.
Condenser choked behind the grille
The top-grille condenser collects dust and cooking film unseen, forcing both compressors to work harder and cool less. On an over-and-under it is the most common preventable cause of slow warming. A coil cleaning every six to twelve months restores capacity, often with no parts needed.
Water pooling under the crisper or drawer
A clogged or frozen defrost drain tube sends melt water into the cabinet instead of the drain pan, leaving puddles under the crispers or at the base of the freezer drawer. We clear and flush the drain line and confirm it stays open through a full defrost cycle.
Seattle service for your Sub-Zero
The over-and-under is the unit we pull open most in the Craftsman and Tudor kitchens of Wallingford, Ravenna, and Green Lake, where original 600-series and BI units have been quietly running since the last remodel. Many of those homes have hard-working kitchens and pets, so the top-grille condenser loads up faster and the freezer-drawer slides see heavy use. In older Ravenna and Montlake houses the water lines feeding the drawer ice maker are often long, undersized, or throttled at an aging saddle valve, which is why we always check line pressure on an ice complaint. We stock parts for every over-and-under generation, keep our service area inside Seattle proper, and can usually reach these north-end neighborhoods the same day.
Over-and-Under — questions we hear
My fridge is warm but the freezer drawer is frozen solid. What is wrong?
That is the normal dual-refrigeration pattern. The refrigerator and the freezer drawer run separate sealed systems, so the warm upper section means the fridge system or its evaporator fan needs attention, not the freezer. We test each side on its own before quoting.
The ice maker in the drawer stopped. Do I need a new one?
Often not. Most drawer ice-maker failures come from low water pressure, an iced-up fill tube, or a tired inlet valve rather than the ice maker itself. We check pressure at the unit first, because replacing the module will not fix a supply problem.
The freezer drawer does not close on its own anymore. Can that be fixed?
Yes. The slides, auto-close mechanism, and gasket wear over the years and can be serviced or replaced so the drawer seats and self-closes again. Fixing it also stops the frost and sweating that a leaking drawer causes.
Do you still work on the legacy 600 and 700 over-and-under units?
Absolutely. Those are among the most common units we repair in Seattle, and we stock the fan motors, defrost parts, gaskets, and ice-maker components they need. A well-maintained 650 has plenty of life left.