Can I run my server with Master server only?

I want to run my server without sub-server.
master server has all the logic for game and lobby job, connection request....
if players matched, new thread created and handle game. main thread is working for main menu and lobby job.

is it possible?

my server as described above, is not working.
It installed at photon control - loadbalancing, but I can't run it. photon control icon is twinkling all day long.
I wonder this problem is because of
- Master server needs peaceful state after ApplicationBase.Setup. ( my code runs While(true) after Setup )
or
- I have mistake on my code or Configuration