
The 315W is a single-zone undercounter wine storage unit from Sub-Zero’s 200/300 Series, discontinued with spec sheets captured between 2006 and 2010. It’s also printed under several suffixed variants — 315W/O, 315W/S, and hinge-direction codes — whose meanings aren’t documented anywhere we could confirm.
A storage zone running warmer or cooler than it’s set to is the issue reported most on a 315W, and temperature drifting gradually over a matter of days is the other common pattern. A cooling system cycling far more often than it used to rounds out the issues typical of a unit this age — check the set temperature against a standalone thermometer before assuming the control itself has failed.
Key Features
- Single-zone undercounter wine storage unit
- Roller-assembly shelves, stationary shelf, discreet lighting, temperature control, serial and model number plate
- 200/300 Series undercounter generation, no longer produced
- Also printed by Sub-Zero as 315W/O, 315W/S, 315W/O-RH, 315W/O-LH, 315W/S/TH-RH, 315W/S/TH-LH, recorded exactly as published; the suffix meanings are not documented anywhere we could read
Most Common Issues on This Model
One storage zone running warmer or cooler than it is set to — a pattern documented for the 315W.
Both zones drifting together over a matter of days
On the 315W, cooling system cycling far more often than it used to

