I conducted a comprehensive diagnostic on the Rheem furnace, starting with a visual inspection of the unit. I checked for any visible signs of damage or wear. Next, I tested the thermostat settings and ensured the power supply was stable. I then accessed the control board to review error codes and operational data. I also inspected the air filters and cleaned them if necessary. The furnace's burners and ignition system were tested for proper function. Finally, I assessed the heat exchanger for efficiency and safety, ensuring all components were operating within optimal parameters.
