Ok I have a 2012 PC 2910. This happened to me and after resetting the generator, it happened again.The transfer switch was the problem.I felt around in the rug on the wall behind the drivers seat and found the phillips head LONG screw , removed the screw and found the transfer switch.While shunting between shore power and generator I saw a FLASH from the breaker in the transfer box.....called PC and was told " Oh, we never heard of this...the transfer switch never goes bad"....solution, take a pic of the wire set up inside the box..disconnect the shore power, order a new box from Amazon abt $145.00 install, problem solved. good luck