Error on Oceanic Data Plus 2

[walton]

I have a Oceanic Data Plus 2 dive computer that I have only used a few times (with no problems) about 2 months ago. I am going on a dive trip this week and when testing my gear this weekend I disovered a problem with the dive computer. When I activate the computer it does the normal countdown then flashes "H" four or five times then shuts off. THe last time I used the computer there were no problems and I have tested it once between then and it worked fine. I changed out the battery and am still getting the same flashing H. I was not sure if this was something that could be reset or if I needed to send in the computer to get looked out (basically looking for a quick fix so I can use it this week)
Thanks
Chris