I just wanted to put a note here about these errors. Hopefully, it can help someone in the same situation.
We had these errors coming up intermittently and could never resolve them. We found that these errors were becoming more common after making some changes to some of our surrounding systems.
We seem to have completely resolved this issue by grounding our extraction hoses back to the extraction unit itself. We did this by running a wire along the metal straight sections of pipe, and screwing into it, as well as grounding to the wire that is in the flexible section of hosing.