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There are some sounds during normal use (compressor, refrigerant circulation). Problem Possible cause Solution The appliance does not operate. The lamp does not operate. The appliance is switched off. Switch on the appliance. The mains plug is not connected to the mains socket correctly. Connect the mains plug to the mains socket correctly. The appliance has no power. There is no voltage in the mains socket. Connect a different electrical ap- pliance to the mains socket. Contact a qualified elec