So inside of my 2020 manitex 155 cab got a little wet not saturated because of a sudden storm and the door blowing open! Shut door and let storm pass! After storm turn power back on and attempted to make a lift! LMI went through normal cycles but could not move any controls. No codes found with override button held down you can operate. And the horn would sound every minutes or so with two beeps!
What computer is it running?? Greer insight, Greer element….. etc??
Element I think
assuming the computer is happy and no codes present. I’d check the onboard function kick out fuse 10 amp at computer board. Then start verifying the kick out circuit using the schematics.