Originally Posted by thanksagain
Would like to reset/replace my high limit switch but not sure where it is, I do see a sensor on the fire box with two wires, is that it? But no reset switch on it.
You might have to take some pic. with the doors off the furnace to get help on the limit switch If there is a small switch on the burner, burner box, or inducer these are small limit switches, some times reset able. If you have a down flow furnace with the blower near the top. you would probable find a hi limit switch back in there beside the blower or even screwed to the blower and some furnace have them there that are reset able.