Doug Krause:Flashing depth would be an indication of a max depth alarm -
We have a winner!!!! BING, BING, BING, BING!!!
Thank you Kraken and Doug. I never (intentionally) set the depth limit so it just never dawned on me to check it. Dohhhh!!!! Somehow I inadvertently set it to 30 ft!

Hey, I'm over 40. I'm allowed my moments!
Also ... thanks Tony for firing off ideas. I bet you never thought it could be something so obvious (and stupid!).
Yea ... problem solved!