Description
Cause
Comment
Droning
Cooling aggregate
Normal operating noise of the cooling
aggregate. The level is dependent on
the size of appliance.
Humming
Fan
Normal operating noise of the fan.
Gurgling
Cooling circuit
Normal operating noise as coolant
Babbling
flows through the circuit.
Murmuring
Hissing
Cooling circuit
Normal operating noise as coolant is
injected into the condenser.
Cracking
Case or cabinet
Normal as materials expand and
contract due to temperature variations
(e.g. plastics, isolation).
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