I would check all your electrial connections ASAP. At the water heater, Furnaces, Fuse panel, etc. Tighten everything you can put a screw driver on (turn your power off first.... up plug RV from shore power.
Look for any connections with the twist on wire nuts. They are prone to burn.
2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, Fresh water surge tank, Black Tank Tornado flush, 4999 zip ties.