If you have console access to it you can do a password reset on the root user and then just login to see what the current configuration is. You boot up the box and break the boot up sequence when it says <enter space bar for command prompt>
type boot -s then type recovery once it goes into single user mode. From there you go in the config and reset the root user password.
% cli
user@host> config
user@host# set system root-authenciation plain-text-password
Commit - reboot and you are good.
I am sure you can do a factory default also - but don't do enough with EX2200's to remember off the top of my head (unlike resetting passwords 🙂