Please verify that your batteries are in working condition. The best battery to use is a Duracell or Energizer battery that has an expiration date of 5 years in the future. If the batteries have been in the safe for more than 6 months please change it and try opening and closing the safe again.
Note: if this does not work please give a call to customer service (1-800-242-1055 Opt. 2)