The CUNesf 3523 Comfort NoFrost matches the CUN 3523 in cabinet size and NoFrost format, under its own model designation.
Whichever F-number is actually lit on the panel, and the defrost cycle slipping out of schedule, are the two things checked first on this unit, along with the same under-counter clearance inspection as any CUN-family model.
Key Features
- Built-in undercounter combination refrigerator-freezer
- Comfort-tier electronic temperature control
- NoFrost frost-free operation with automatic defrost cycling
Most Common Issues on This Model
Control panel showing an F-series error code — Liebherr documents the problem ranges but reserves the specific-digit meaning for a technician's own service lookup, so we read the exact code before opening anything
NoFrost defrost cycle not clearing on schedule, leaving frost building up on interior surfaces
Ventilation clearance beneath the counter restricting airflow and straining the compressor over the long run