AEG SCT71900S0 - Manual (Page 60)

60
Description Cause Comment
Droning Cooling system Normal operating noise of the cooling
system. The level is dependent on
the size of cooler.
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 Cooler housing Normal as materials expand and
contract due to temperature variations
(e.g. plastics, insulation).