Written by
Elena Vasquez Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeTemp Hi 12H+, L Temp Hi 12H+, R Temp Hi 12H+
ApplianceWine Refrigerator
Owner checklist
Confirm the door is shut and its gasket is sealing.
Nothing should block the grille at the bottom front of the cabinet.
Clear any dirt or lint off the condenser coil.
If the message does not go away, contact Customer Care.
What affects inside temperatures
The manual lists what moves the temperature inside: the dial setting, how warm the room is where the cabinet stands, sunlight or a heat source nearby, how many times and for how long the door gets opened, and how many hours the interior light burns.
What the code says
Either the left or the right zone has run 10°F (5°C) over set point beyond 12 hours. The text may be prefixed with L or R, or with both in brackets. On DWR and ZWC units L is the top zone or drawer and R the bottom; the U-3036BVWCS-00B is included.
Service side
When heavy frost is noted alongside, service looks at door alignment, the gasket seal and whether the evaporator fan runs, and then at the refrigeration system.
Related codes
Temp Hi 6H+ is the same warm reading after only 6 hours.
If Temp Hi 12H+ stays after those checks, call (415) 329-7078 to discuss U-Line wine refrigerator repair in San Francisco. Say which zone showed the message, what you checked, and read out the model number.
Model compatibility: U-Line reuses codes across series and model years, so Temp Hi 12H+, L Temp Hi 12H+, R Temp Hi 12H+ may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Temp Hi 12H+ means a left or right zone has stayed 10°F (5°C) above set point for over 12 hours.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your U-Line appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your U-Line appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
