Hamed,
You've been given some good advice here, not to mention several clues, and there are more, that relate DIRECTLY to your trouble. However, I would agree with Mr. Davidson at this point. For those of us sitting out here reading your post, certainly our collective experience will point you in the right direction to remedy your trouble, as this forum boasts years of experience. BUT...to think that over the internet, you can through this forum trouble shoot your (dangerous) dilemma, I'm afraid to offer more advice for the very reasons Scott mentions ( I would add TO SHUT THE THING OFF UNTIL THE MACHINE/PROBLEM IS RESOLVED). Call an Qualified Conveyance Company to assist you, or if your outside of the U.S., still call a reputable service company before you find yourself deeper into it than you'd like. Then they'll be asking YOU the questions!