I just purchased an Atom 1.0 Dive computer by Oceanic. When I brought it out of deep sleep and set the clock, it began to beep and flash, warning that I was too deep and PO2 was to high. As I was sitting in my living room, this does not seem right. After sitting for an hour it stopped, but instead of the dive computer surface screen I get a flashing "A-D" for 5 seconds and then it returns to watch function. Any Ideas?