Appliance and method for appliance diagnostics

An appliance, comprising:

• a plurality of appliance components;
• an acoustic sensor configured to obtain an acoustic signal relative to the plurality of appliance components;
• a controller operably coupled to the plurality of appliance components and configured to receive the acoustic signal from the acoustic sensor, the controller configured to execute instructions that causes the appliance to perform operations, the operations comprising:
• obtaining a user control signal to perform a diagnostic routine;
• obtaining an ambient acoustic signal external to the appliance;
• performing the diagnostic routine, wherein the diagnostic routine commands an activated state of one or more appliance components of the plurality of appliance components, and wherein the diagnostic routine commands a deactivated state of a remaining one or more appliance components;
• obtaining a current-state acoustic signal relative to the plurality of appliance components commanded to the activated state;
• generating a current-state spectrogram from the current-state acoustic signal;
• determining an operating condition of the plurality of appliance components commanded to the activated state based at least on comparing the current-state spectrogram to a baseline spectrogram corresponding to activated appliance component;
• and
• generating a communication signal based on the determined operating condition of the plurality of appliance components.