Learn more about furnace repair cost here. As you can see, the flame passes current from the frame of the burner into the flame sensor electrode. It is merely a steel rod. Simply check the grounds on your burner and the connections to the flame sensor and clean the rod. No replacement necessary!!!
How to fix flame sensor on furnace: EASY AND FREE HVAC repair – Heater shuts off after lighting
Learn more about furnace repair cost here. As you can see, the flame passes current from the frame of the burner into the flame sensor electrode. It is merely a steel rod. Simply check the grounds on your burner and the connections to the flame sensor and clean the rod. No replacement necessary!!!