I'm wondering if anyone has an answer as to why my Trailblazer 302 Air-Pak is surging while in the auto-speed position. I had my Diversion 180 plugged into it when this started. It was also raining a little when it started. The TB has 19 hours on it and I got it new last August.

When I turn the TB switch to "Run" it's fine. When I go back to "Auto-speed" it surges. The surging stops when the Diversion is turned off. No other equipment is plugged in at the time and the Diversion is plugged into the 240v plug.