The Rinnai 105000233 Water Heater Electrode supports the ignition process by detecting or producing the electrical spark required for burner operation. This replacement component is installed near the burner assembly and connects to the water heater's ignition system through its designated electrical connection. During startup, the electrode receives an electrical signal and creates a... https://www.hnkparts.com/105000233-rennai-electrode/4-105000233.html