The CUP 3021 Comfort steps up in size again from the CUP 2721, same manual-defrost undercounter combination format and Comfort-tier control.
A logged power interruption and whichever F-number the panel is showing are the two complaints specific to this model, in addition to the routine airflow check under the counter.
Key Features
- Built-in undercounter combination refrigerator-freezer
- Comfort-tier electronic temperature control
- Standard Liebherr error code diagnostic display
Most Common Issues on This Model
An nA or power-failure symbol on the display after a power cut, recording that the cabinet warmed above its set point while the power was out
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
Ventilation clearance beneath the counter restricting airflow and straining the compressor over the long run