An appliance can comprise a controller, a first memory, and a near field communication (NFC) tag having a second memory being coupled to the controller. The NFC tag is configured to dynamically set a web service address from an external server based upon a write command from a mobile device in communication with the NFC tag. The controller can parse the web service address to begin a set of diagnostic tests for the appliance and write a web service address to the NFC tag based upon a result of the diagnostic tests. The mobile device can read the written web service address and load a web page with detailed information for the particular appliance and the problem diagnosed therewith.