Quick answer
Sub-Zero wine storage units use zone temperature alarms, door ajar alarms, a service indicator and a flashing display after power interruptions. A temperature alarm usually means a door seal problem, a heavy load of warm bottles, a failed zone fan, thermistor or heater, or a refrigeration problem.
Applies toUW, IW, BW, DE wine units
Typical fixDIY / Technician
Service call$75
What It Means
Each zone is monitored separately, so alarms often point to a specific zone.
Common Causes
- Zone temperature out of range
- Door not sealing
- Power interruption
- Zone fan, thermistor or heater failure
- Condenser or sealed system issue
What You Can Do
- Acknowledge the alarm.
- Check the door seal and racks.
- Allow 24 hours after loading many bottles.
- Clean the grille and condenser.
What a Technician Does
We test zone sensors, fans and heaters, read stored faults and verify refrigeration performance.
Need a Sub-Zero Specialist?
$75 service call, credited toward your repair · 1-year parts · 180-day labor warranty · EPA 608 certified · Mon–Fri 8am–7pm · Sat–Sun 8am–4pm