Patent ID: 8432291
Filing Date: 2013-04-30
Classification: H04L

Abstract:
1. A diagnostic method for a home appliance diagnostic system, the method comprising: receiving a sound signal output from a home appliance via a communicator of a diagnostic server and extracting product information about the home appliance from the sound signal; analyzing via the diagnostic server the product information and determining, when an error code is set in the product information, whether the error code corresponds to a water supply error associated with a water supply operation of the home appliance; diagnosing via the diagnostic server a fault of the home appliance by determining, when the error code corresponds to the water supply error, whether at least one of a water supply malfunction, a water level sensor malfunction, or a program malfunction has occurred using diagnostic data associated with the water supply operation among a plurality of diagnostic data included in the product information; and deriving via the diagnostic server a diagnosis result by deriving a solution corresponding to a cause of the water supply error, the cause being obtained according to the fault diagnosis, wherein diagnosing via the diagnostic server the fault of the home appliance includes diagnosing the water supply error by determining whether the water supply operation has a malfunction using at least one of state information, a wash water temperature, or a change of the wash water temperature among the plurality of diagnostic data, and wherein diagnosing via the diagnostic server the fault of the home appliance includes determining, when the state information is associated with a washing or rinsing mode, whether the wash water temperature has been changed by comparing a first wash water temperature measured when water supply starts and a second wash water temperature measured when water supply is completed.