V-ZUG Classic eco, Operating Instructions Manual, Page: 18 / 28

9 Noises and alarms
9 Noises and alarms
9.1 Operating noise
The appliance can make various noises during operation. Although the appliance is
noise-optimized, some noise cannot be eliminated completely. This noise depends on
the size of the appliance, how it is installed and the cooling requirements (e.g. fast cool-
ing), the ambient temperature and the installation conditions. Operating noises are partic-
ularly audible immediately after switching on the compressor; however, these noises be-
come quieter as the appliance runs.
Unusual noises are often caused by improper installation. The appliance must be in-
stalled on a level and stable surface. In open kitchens or in the case of appliances in-
stalled in partitioned areas, normal operating noises may seem louder. This is not a fault
but rather an effect of the design/architecture.
Noise Cause Remark
Buzzing Cooling aggregate Normal operating noise made by the cooling
unit; volume depends on the size of the appli-
ance and the load-dependent speed of the
compressor motor.
Gurgling, bub-
bling, hissing Cooling circuit Normal operating noise as refrigerant flows
through the cooling circuit.
Hissing Cooling circuit Normal operating noise as refrigerant is injec-
ted into the evaporator.
Rattling Glass shelves, baskets,
door trays, contents, etc. Arrange the parts in the interior so that they
are fixed in place and not touching.
Creaking Housing Normal, temperature-dependent stress-strain
of the materials, e.g. plastics, insulation.
9.2 Warning and alarm signals
Warnings when the appliance doors are open
If the cooling compartment or freezer compartment door is open for several minutes, the
following alarm signals occur:
Time Alarm signals
After 2 minutes LEDs flash every 15 seconds.
After 3 minutes LEDs flash every 5 seconds.
After 4 minutes LEDs flash rhythmically every second.
After 10 minutes An acoustic alarm sounds for 3 minutes. The acoustic alarm repeats
every 30 minutes.
Temperature alarm
An acoustic signal sounds if the cooling compartment temperature rises 10 °C above
the selected temperature value.
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