Why your flame sensor gas furnace keeps shutting off
If your flame sensor gas furnace keeps cycling off just a few seconds after the burners ignite, you're likely dealing with a dirty or oxidized sensor rod. It's one of the most common reasons a heating system decides to quit right when the temperature drops, and honestly, it's one of the most frustrating. You hear the inducer motor kick on, you see the glow of the igniter, the flames roar to life, and then—click—everything goes dark. ...