Good morning, we're on the road with our doggie in Arizona. Like using this main van fan(over kitchen/living area) to move air, but its not working. We're in a 2018 Thor Windsport 34p. Any ideas? Can't find the fuse for this. Already tested all the fuses under the bed. Thanks!
My fan, different model RV, is fused at the 12V panel. I have a Left/Driver side fuse and a Right/Passenger side fuse. The fan is tied into the Right/Passenger side fuse. Since you said you checked your fuses at the panel I would drop the inner cover and see if a connection on the switch came off. You can check for 12V to verify power to the switch if needed to prove fan has given up the ghost.
There is a good possibility that the fuse is up in the vent cavity next to the fan. You will have to remove the facia around the vent and then you can see the wires. They quite often go from the hot wire on the fan to a fuse and then they are connected by wire nuts to the power lines that go down the middle of the coach in the ceiling area.....just for ventilator power.
I'm having a similar problem but mine is intermittent. I have the exact same fan, sometimes it doesn't work, sometimes it does. Usually when it is out I'll check the fuses with a fuse check device (not by pulling them out). They all check out good. After that the fan will usually work. I've noticed when the fan is out, the outside LED lights will not work with the switch (the inline fuse under the sink is good) but will still work with the remote control. The 12v lights above the bed in the slide also do not work. When the fan is working every thing else works. The problem is intermittent so I'm not sure what is happening.