Cat 313c cr boom raise fault code ?

Started it up the other day and an audible alarm with "bup" on screen. The boom wouldn't raise. Talking to service dept. over a few days, told me to flip toggle switch under the seat. That regained boom control but still has alarm and code. Can someone explain? What does the switch do? Guesses as to what caused problem to start with?

It's a grey market machine.

Thanks

Cat 313c cr boom raise fault code ?