Modine PA 105 Unit heater. Questions and/or manual.
Thanks for the quick reply. I was able to find the parts breakdown, and even the original part number, on the site. What I haven't been able to find anywhere on the net are specs on the limit switch in question. I'll take a closer look at the numbers stamped on the old switch, maybe it'll have the temp ranges as you suggested.
I was looking at the side of the heater again, Modine must have known that it was a bad design from the start. The sheet metal already has the mounting holes (plugged) for a second limit switch.