Appliance component fault detection

An appliance comprising:

• a smart controller configured to control operations of the appliance;
• one or more components each configured to perform an operation of the appliance in response to the smart controller;
• an input/output (IO) circuit coupled to the smart controller via a local data bus, the IO circuit configured to receive commands from the smart controller and to control of one or more components in response thereto;
• and
• a plurality of sensors coupled to the IO circuit, at least one of the sensors comprising a current sensor configured to monitor load current in the appliance associated with operation of the one or more components for determining a fault condition thereof.