Original post by: mayer ,
I could not find anything on the IP OT error code. My best guess would be the OT part of that stands for over time. Try unplugging the machine for five minutes, overnight might be better, to allow it to reset. This may be a control board failure. Personally I will not work on one of these things if it involves getting into it. They are just to dangerous. They are cheap and just not worth the risk. Keep a very close eye on it and discard if you get another failure.