sounds like the main controller is displaying FLT on the screen, Ive seen this a few times, and it is usually the solid state starter that has failed, this happens frequently on power outages. I am guessing they want to replace the control board inside the starter, this is usually the part that goes bad during a power outage. it is fairly cheap, and requires less then an hour to install. Now it could be that one of the SCR units in the drive are bad, in which case the entire starter would have to be replaced. the starter is a bit more cost wise, around 1K or less, plus a couple of hours to install on the fat side. they should at least advise of which control board is being replaced. i would suspect if it were the main controller board, the display would not be working, and indicating the FLT fault. it is possible that it has failed, but doubtful. at any rate the cost of around 2K to replace the main controller Board is probably fair or nearly a fair deal. 2K to replace the starter control board is definitely not a fair proposal.
