I had an intermittent relay causing bedroom slide to not come out. I replaced the relay. That was on my 05 Dolphin. The relays on that RV board, which looks similar to your board except fewer relays mounted since it only had 2 slides, UN-plugged from the board and so where easy to change. It's a common relay, I ordered several on Ebay just to have extras.
Ellen & Greg
08 National Dolphin DL-35Ci, RoadMaster Rear Sway Bar, Rear Trac Bar, Koni Shocks Front,
Workhorse W22, Kelderman Air Ride, Towing 08 Smart Car