NEED HELP... !! Electric side of water heater heater keeps blowing buss fuse

[hidefman]

Alright need some help here... I own a 2010 keystone Laredo 303tg .. I can’t seem to figure out why when I turn my water heater on for the electric side of it .the switch in the camper (not the one on the outside of the heater) . it blows a blue 15 amp buss fuse .. same one every time.. the one it keeps blowing controls the carbon monoxide detector, water pump switch , and whatever else is on the same circuit...haven’t figured out yet what’s all on that circuit .. but when I replace the fuse and leave the electric side off and try to use the lp gas switch .. it ignites and heats just fine... already pulled converter out and checked wires , pulled the heating element and checked and tested that ( comes up with 10.4 ohm) , pulled the cover off by reset buttons on outside and the wires there appear to be fine , pulled the switch panel off the wall and those wires looked fine from what I could see without pulling the wall apart... the only thing I haven’t done is pull the belly down to check the wires up there yet

Any help figuring this problem out would be GREATLY APPRECIATED!!!! Thanks in advance