Okay I took a photo of my afton bay pellet stove, 2002 year. What is the 3 wire switch? The one on the cumbustion fan is the proof of fire switch low limit. So i am guessing the other with 2 wires is the high limit? There is another that sits under the low limit. Can you identifiy these switches for me. I am learning. Most of the switches ohm out at 0 with the stove cold and off. Thank you in advance.