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10 Noises and warnings
10
Noises and warnings
10.1
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
Remarks
Buzzing
Compressor or fan
Normal operating noise made by the cooling
unit.
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 injected
into the evaporator.
Rattling
Shelves, 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.
Clicking
Valve
Normal switching noise caused by the switching
valve.
10.2
Warnings
Warnings when the appliance doors are open
If the refrigerator or freezer compartment door remains open for a time, the following
warning is given:
Time
Warnings
After 3 minutes
The LEDs flash with the intensity of the brightness gradually increas-
ing and decreasing.
After 5 minutes
The LEDs flash and an acoustic signal is emitted.
Press any button to confirm the warning. After confirming the warning, if the appliance
door remains open then another warning is given. After confirming 3×, no further warning
is triggered. The interior illumination is turned off and the display shows the error mes-
sage A1
(refrigerator compartment door) or A2
(freezer compartment door).
▸ Further information: Trouble-shooting (see page 29)
28
Содержание CombiCooler V4000 178KNI
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