My Freedom X/C Pro 3000 failed when it was not plugged into shore power... I was driving down the road when it started an E10 Error.... Internal Hardware Fault. I had a hardwired EMS installed anyway so grid surge did not cause the problem. More likely a component failure due ot manufacturing and Q/C.
A hardwired EMS is the first upgrade I make to every new coach I buy. It is cheap protection for fridges, A/C's, stoves, ovens and transfer switches.
The only E10 hardware error I've had with the X/C Pro is when I had a small table fan plugged in and sitting in the sink while driving, blowing air at the dog in the recliners. -)
I recovered by cycling power to the inverter.
Not sure if the fan caused it. It was not pulling a lot of power, and started up fine with the initial surge...no other load on the inverter.