A communications processing section of a management apparatus sends a
request for malfunction information via the Internet to one or more
electrical devices being managed. A database manager of the management
apparatus refers to data stored in a database and updates the record of
the electrical device therein. A timing control section of the management
apparatus carries out control so that the number of electrical devices
requested upon by the management apparatus does not exceed a
predetermined value. In this way, despite the management apparatus
centrally manages the malfunction information of each electrical device,
a peak quantity of the malfunction information received by the management
apparatus can be suppressed and the workload on the management apparatus
can be relieved, as opposed to the case where each electrical device
sends the malfunction information at its own timing. As a result, a
management system of electrical devices is provided, which is capable of
managing malfunction information of electrical devices without putting a
heavy workload on the management apparatus.