Arrive at the location and water heater repair based on a tech support diagnosis. The technician recommended replacing two parts: the gas valve and the Honeywell Spark black box. It's great that they provided the part numbers, which should make the replacement process easier. 1 Part #100109929 Honeywell Spark black box 2 part # 100110858 gas valve Here’s a general guide on how to proceed: 1. Turn off the gas supply to the water heater. 2. Turn off the power (if applicable) to avoid any electrical hazards. 3. Remove the cover or access panel on the water heater to reach the parts. 4. Locate the gas valve and Honeywell Spark black box as per the parts you need to replace. For the gas valve, this controls the flow of gas to the burner, and you’ll likely need to disconnect the gas line carefully. For the Honeywell Spark black box, this is part of the ignition system. You'll typically disconnect the wires and the mounting screws. 5. Install the new parts by reversing the steps: Inst