Provided is a household appliance including a user interface with a visible indicator that conveys primary operational information indicative of an operational aspect of the household appliance to a user during normal operation of the household appliance, and a controller. The controller receives a signal indicative of diagnostics data of the household appliance and causes the visible indicator to transmit a communication signal to an external device that interprets the communication signal and communicates the diagnostics data to the user. The visible indicator provides a two-way communication between the household appliance and the external device. A method for diagnosing a household appliance is also provided.