11
Noises and alarms
11.1
Operating noise
The compressor and the cooling circuit make various noises while the appli-
ance is running.
Although the appliance is fitted with a quiet compressor and a noise-optimised
cooling circuit, some noises cannot be completely avoided. The volume of
these noises depends on the size of the appliance, how it is installed and the
cooling requirement (e.g. for rapid cooling). Operating noises are particularly
audible immediately after switching on the compressor; however, these noises
become quieter as the appliance runs.
Keyword
Cause
Remarks
Buzzing
Cooling unit
Normal operating noise made by the cool-
ing unit, volume depends on the size of
the appliance and the load-dependent spin
speed of the compressor motor
Gurgling,
bubbling,
hissing
Cold circuit
Normal operating noise caused by the
flow of refrigerant through the cold circuit
Fizzling
Cold circuit
Normal operating noise caused by the in-
jection of the refrigerant into the evapor-
ator
Rattling
Glass shelves, bas-
kets, door trays,
contents, etc.
Arrange the internal components so that
they are fixed in place and are not touch-
ing.
Creaking
Housing
Normal, temperature-dependent stress de-
formation of the materials, e.g. plastics, in-
sulation
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