I am a home service technician, and I recently completed a job at a client's home. The client had a Rheem water heater that was not producing hot water. I performed a diagnostic on the water heater to determine the issue. I checked the power supply, thermostat, and other components to identify the problem. After troubleshooting, I found that the water heater's heating element had failed. I replaced the element and tested the water heater to ensure it was working properly. The client was happy with the service and thanked me for my help.