Are these switches prone to fail. ??
I am getting the Hi Limit LED on the panel and the heater does not start. No fan, no nothing other than the Service Heater light.
I took the heater apart and cleaned it all out really good - as last year we had a mouse in that made a mess. It was removed from service last year working and put into a garage for the winter.
I removed the High Limit Switch and its just a 1/2 brass well inside with the two wires on the outside. I expect that if it gets too hit it shuts the system down...
Does not look like there is much to fail other than some corrosion inside the well.
Any help would be appreciated before I start throwing parts at it.