10 Noises and alarms
10
Noises and alarms
10.1
Operating noise
The compressor and the cooling circuit make various noises while the appliance is run-
ning.
Although the appliance is fitted with a quiet compressor and a noise-optimized 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 Fast
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 cooling
unit; volume depends on the size of the appli-
ance and the load-dependent speed of the com-
pressor motor.
Gurgling, bub-
bling, 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, bas-
kets, door trays, con-
tents, 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.
Clicking
Valve
Normal switching noise of the switching valve.
Unusual noises caused by improper installation
Unusual noises are often caused by improper installation. The appliance must be in-
stalled on a level and stable surface. The pipework on the back of the appliance must
never be routed across the wall or other furniture. The pipes must not touch each other.
In open kitchens or in the case of appliances installed in partitioned areas, normal oper-
ating noises may appear louder. This is not a fault but rather an effect of the architecture.
10.2
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:
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.
19
Summary of Contents for Noblesse
Page 1: ...Operating instructions Noblesse Noblesse eco Refrigerator...
Page 25: ...25 Notes...
Page 26: ...26...
