Patent ID: 7197429
Filing Date: 2007-03-27
Classification: G01R

Abstract:
1. A diagnosis system for household electric appliances of the type presenting multiple loads which are energized by switches commanded by respective electronic controls operatively coupled to a command module, which energizes the loads and an interface coupled thereto, comprising: a voltmeter operatively coupled to an inlet of each load, so as to measure a first voltage in the inlets of all of the loads with the switches opened, and one or more second voltage in corresponding inlets of loads each having a respective switch for the load closed; and a control unit operatively associated with the command module and with the voltmeter and which is operated according to a sequence of tests that are selectively activated to receive from the voltmeter the values of the first voltage and of each second voltage and to process these values, indicating in an interface the existence of failure in at least one of a plurality of elements defined by the command module, the switches and respective electronic controls thereof, the existence of a failure being indicated in case any second voltage presents a value that is equal to or higher than that of the first voltage.