User manual

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).