I got a new maytag washer the other day.

My question is on new washers is the agitator locked and has to be
unlocked before use?

Here is what happened, the person that came to install it turned it
on and it started to fill with water, he then put it in the rinse
cycle and it ran for a few seconds and stopped. it tripped the GCFI
circuit in the plug, reset the outlet and tried again. again same
thing, we then tried another non GFCI Outlet, it worked for a little
longer started to smell and smoke a bit and then blew a fuse.

What could be wrong with this washer?