Description
The Navien Tankless Water Heaters 30011259C Wiring Harness Assembly is an electrical cable set that routes power and signal connections between the control board and operating components inside tankless water heater unit. It carries organized wiring paths for sensors, fan motors, gas valve circuits, and temperature feedback lines to maintain coordinated communication across the unit. It is routed through internal channels and connected at designated terminal points on the main PCB and component plugs in HVAC systems. The harness structure ensures accurate electrical transmission, stable signal continuity, and reduced wiring complexity, maintaining consistent operation of the heating cycle and system response operations.









