A home appliance for a home appliance system, the home appliance arranged to transmit product information and status information to a management device via a wire/wireless communication network for fault diagnosis of the home appliance, and the management device arranged to diagnose a fault of the home appliance using the product information and status information, the home appliance, comprising: a selection device configured to receive input of an external command signal for executing the fault diagnosis from a user; a conversion device configured to convert the product information and status information into at least one transmission acoustic signal, and to output the at least one transmission acoustic signal; a sound output device configured to output to the outside a sound corresponding to the at least one transmission acoustic signal output from the conversion device; a storage device configured to store the product information and status information of the home appliance; a controller configured to, upon receipt of the external command signal through the selection device, load the product information and status information from the storage device, provide the product information and status information to the conversion device, and control the conversion device to output a main transmission acoustic signal corresponding to the product information and status information, the controller is further configured to control the conversion device to output a start transmission acoustic signal to the user before the main transmission acoustic signal is output, to inform the user that at least one transmission acoustic signal corresponding to the product information and status information is about to be output, characterised in that the controller is further configured to control the conversion device to output an end transmission acoustic signal after the main transmission acoustic signal corresponding to the product information and status information is output, the end transmission acoustic signal informs the user of the completion of the output of the main transmission acoustic signal. a selection device configured to receive input of an external command signal for executing the fault diagnosis from a user; a conversion device configured to convert the product information and status information into at least one transmission acoustic signal, and to output the at least one transmission acoustic signal; a sound output device configured to output to the outside a sound corresponding to the at least one transmission acoustic signal output from the conversion device; a storage device configured to store the product information and status information of the home appliance; a controller configured to, upon receipt of the external command signal through the selection device, load the product information and status information from the storage device, provide the product information and status information to the conversion device, and control the conversion device to output a main transmission acoustic signal corresponding to the product information and status information, the controller is further configured to control the conversion device to output a start transmission acoustic signal to the user before the main transmission acoustic signal is output, to inform the user that at least one transmission acoustic signal corresponding to the product information and status information is about to be output, characterised in that the controller is further configured to control the conversion device to output an end transmission acoustic signal after the main transmission acoustic signal corresponding to the product information and status information is output, the end transmission acoustic signal informs the user of the completion of the output of the main transmission acoustic signal.