The seat circuit breaker should be CB10 in your electric bay, streetside forwardmost. However those breakers reset if shorted, and aren’t usually loose. Plus, if the co-pilot seat still works it’s more likely the pilot seat was turned recently while you were “camped”, and the harness under it got stressed enough to disconnect a connector or break a wire. It’s happened to many of us, though usually it’s the copilot seat that gets turned too much. The harness(s) could’ve used a bit more slack.
You’ll need to check under the seat, probably best accessed from the backside, for any wires needing routing that won’t allow harm when the seat is moved and turned. And of course find any connector that’s been pulled loose or a wire that got pinched. If the entire seat is inoperable in any of its functions, then it’s likely a heavier main feed wire that’s out.
That’s not to say there isn’t a fuse involved between the electrical bay and the seat. I’ve never had to run down such a fuse, but would expect it to be under the seat along a main feed wire. When our copilot seat acted up the coach was relatively new, and my memory is dim for details 12 years or so back. Suffice to say the seat had been rotated for visiting relatives and when next on the road one or more functions wouldn’t work. I vaguely recall a wire stretched too far due to poor loom routing, the footrest feature I believe, and having to replace or repair connectors.
Joel