Hello This Whitfield Profile 20 Photo eye was tired and the lens was burned. Since it provides proof of fire, the stove would not stay on once it lit!. This pellet stove would start and smoke but just keep shutting down! A new photo eye is $64.95 and needs to be cleaned all the time and then if the lens gets smoke stained and burned again we are backed to square one! There is a cover on the exhaust blower housing for the 140 Deg F ceramic snap so let's use it and do the "Photo Eye Bypass Surgery" !! Has anyone else done this bypass surgery on a Profile 20 or Profile 30? Pic 0 - Shows two yellow wires that go from the control panel to the photo eye in the hopper. That is where we cut! Pic 1 - Remove 2 bolts and remove cover Pic 2 - New 140 Deg F ceramic snap disc Pic 3 - Snap disc installed Pic 4 - New 2 conductor stranded 18 Guage wire connected under snap disc screws with wire ties to hold it in a safe place away from the exhaust manifold Pic 5 - Close up of new snap disc with wire connected Pic 6 - Shows yellow wire coming out of control panel on right side of stove going up to photo eye in hopper Pic 7 - Shows new wire from the snap disc connected to the wire going into the control panel. Also shows connectors on the old yellow wire going to the photo eye. In this way the old photo eye can be easily reconnected if you ever want the same problem back again! LOL Pic 8 - Stove with fire now keeps running! Pic 9 - Nice flame!