Good morning, below is a link to our user manual. Try the suggestions there.
You can also copy this to your computers files for future reference or print that one from there;-)
Also a common issue with this model, is the battery contact in the battery box. They need to be cleaned with some WD-40 or similar solvent on a Q tip, use sparingly. Also I recommend only brand new Duracell batteries because this one draws a lot of amperage to open the bolt. This advice really make s a huge difference.
Here is the user manual please visit: http://www.sentrysafe.com/pdfs/OwnersManuals/514472.pdf
In any case, I will stick with you until this is complete.
Please rate kindly thus far, it won't cost you anything to rate my service to you kindly,
Then you can reach me by simply replying to this message anytime.
Thank you and have a wonderful day!