Pkm GS 83.4 A++T Instruction Manual page 132

C /
ONDENSED WATER IN ON THE APPLIANCE
may be generated inside or outside the appliance by high
humidity or very warm ambient temperatures.
C
LICKING
You will hear the compressor click if it is activated or
deactivated.
H
UM
is caused by the compressor while running.
K /
NOCKING SNAPPING
may be generated by sequential expansion and shrinkage
of the components of the cooling system. It is caused by
variation of temperature before and after the compressor
is activated or deactivated.
132