How about an update on what you found out?
Waiting on a limit switch and some new gaskets to put back in the furnace. Sounds like many people have had issues with limit switches. Cleaning everything didn’t change anything, there’s also no inline filter and I already have it running paralleled with two batteries and have tried it with direct hook up to an outlet. Hopefully the limit switch is it since I have to disconnect a bunch of wires and screws just to get the furnace out so I can work on it. They did not make it accessible on my model.