Patent ID: 8532273

Claim:
A home appliance in a home appliance system that transmits product information to a management device via a wire/wireless communication network for fault diagnosis of the home appliance, and diagnoses a fault of the home appliance, comprising: a selection device that receives input of an external command signal for executing the fault diagnosis from a user; a conversion device that converts product information into at least one acoustic signal; a sound output device that outputs a sound corresponding to the at least one acoustic signal output from the conversion device to the outside when the external command signal is input from the selection device; and a controller that includes a storage device that stores the product information of the home appliance for the fault diagnosis, loads the product information stored in the storage device and transmits the the product information to the conversion device when the fault diagnosis is selected through the selection device, and controls a unit conversion time during which the conversion device outputs the product information as the at least one acoustic signal when the at least one acoustic signal is output to the sound output device, wherein the controller provides to the conversion device with first and second unit signals, wherein the first and second unit signals are individual bits of the product information and the first unit signal is binary 0 and the second unit signal is binary 1, and wherein the controller controls the conversion device to output a first acoustic signal corresponding to the first unit signal during a first unit conversion time and a second acoustic signal corresponding to the second unit signal during a second unit conversion time different from the first unit conversion time.