I successfully replaced the control board of a Rheem unit, ensuring the system's optimal performance. The process began with a thorough inspection of the existing control board to identify any signs of wear or damage. After confirming the need for replacement, I carefully removed the old board, taking note of its wiring configuration for accurate reattachment. I then installed the new control board, ensuring all connections were secure and correctly aligned. Following the installation, I conducted a series of tests to verify the new board's functionality, including checking for proper power supply and signal transmission. The system was then reset, and I provided the client with a detailed explanation of the replacement process and maintenance tips to prolong the new board's lifespan.