Your battery that powers the keypad is likely dead. When was the last time it was replaced and how old is the safe?
Opening your safe for the first time (keep door open during setup):
1. Remove and discard the screw (if equipped) at the base of the lock case.
2. Turn the electronic lock case to the right (clockwise), from 12 o'clock to 2 o'clock, and remove.
NOTE: The yellow LED will light when the batteries need to be replaced.
THANK YOU FOR YOUR ANSWER. I'LL TRY TO CHANGE BATTERIES, HOWEVER THERE IS NO INDICATION THAT THERE IS A NEED FOR REPLACEMENT OF BATTERIES. I WILL LET YOU KNOW.
There are 3 possible ways to unlock and access the safe:
1. Factory code
(Found on the first page of this guide) You can always open the safe by entering the pre-set 5-digit factory code. This code cannot be deleted.
2. User code
If you prefer to employ your own code, you can program the safe to open using a 5-digit user code of your choice.
3. User pin
If you wish to give someone else temporary access to the safe, you can program a 5-digit user pin that can later be erased.
Programming the user code
NOTE: One (1) user code is allowed.
1. Press the Prog key , then enter the 5-digit factory code.
2. Enter the 5-digit user code of your choice.
1. Press the Prog key.
2. Enter the 5-digit factory code twice.
Programming user pin
NOTE: One (1) user pin is allowed.
1. Press the Prog key 2 times.
2. Enter your 5-digit user code.
3. Enter the 5-digit user pin of your choice.
3. Enter 0, 0, 0, 0, 0.
NOTE: If your safe does not appear to be working, please check batteries before calling Sentry Customer Care.