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Twoflyrodders's avatar
Nov 20, 2013

Attwood 8940 furnace limit switch access - need help!

I need to replace the limit switch in my Attwood 8940-III furnace. I have removed the furnace from the RV, and I see the location of the limit switch (inside the burner box) but I'm not certain how to access it to replace it (why didn't they put a door over it???). Maybe it's easier than it looks and someone can help me out. All I see now would make me think I'm going to almost completely disassemble it...

Usually if I can get something apart without breaking it, I can fix it. But that's a big if.
  • Thanks. That's the diagram I am using. Looks like remove the blower wheel to get behind it...will give it a go tomorrow.
  • Unfortunately you have to pull everything out to get to burner chamber where limit switch is mounted.

    Here is a service manual with exploded view.......pg. 43 for the 8940
    LINK

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