8 Noises and alarms
Defrosting the freezer compartment
A thick layer of ice will prevent the cold from being transferred to the frozen food. There-
fore, the freezer compartment should be defrosted if a lot of ice has formed. When de-
frosting, keep frozen food as cold and insulated as possible, e.g. by wrapping it in news-
paper.
Do not use pointed objects to remove ice or food that has frozen on solid. Do not
use electrical heaters or naked flames for defrosting.
▸ Set the appliance to «off» by touching the
button.
▸ Leave the appliance door and freezer compartment door open.
▸ After defrosting, clean the interior and dry thoroughly.
▸ Start the appliance again by touching the
button.
8
Noises and alarms
8.1
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.
Keyword
Cause
Remarks
Buzzing
Cooling unit
Normal operating noise made by the cooling
unit, volume depends on the size of the appli-
ance and the load-dependent speed of the com-
pressor motor.
Gurgling, bubbling,
hissing
Cooling circuit
Normal operating noise caused by the flow of
refrigerant through the cold circuit.
Fizzling
Cooling circuit
Normal operating noise caused by the injection
of refrigerant 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 are not touching.
Creaking
Housing
Normal, temperature-dependent stress-strain of
the materials, e.g. plastics, insulation.
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