Pkm GT 200A+++ Instruction Manual page 68

When you operate the appliance for the first time or the temperature falls below a certain
level, the appliance will operate with high power to reach the preset temperature.
may be generated inside or outside the appliance by high humidity or very warm ambient
temperatures.
You will hear the compressor click if it is activated or deactivated.
is caused by the compressor while running.
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.
Distinct noise
Condensed water in/on the appliance
Clicking
Hum
Knocking/snapping
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