When attempting to open lock
| Error code | Error | Notes |
| 02 | Failed attempts/ Sessions | See LCO (below). |
| 03 | Key/Mode mismatch | The wrong key type has been presented for the mode(s) in which the lock is active. |
| 04 or ALS | Silent alarm reset | Hold-up or duress alarm |
| 05 | Dual combination access error | When asked for a dual combination entry, the same combination and key were used for the 2nd entry as for the 1st. |
| 06 | Wrong key type | The wrong key type has been presented. Make sure to use the appropriate key type for the appropriate function. Have the Supervisor display the user key information at the PC system to check the key serial number, user ID, customer # and company #. Possible bad key contact. |
| 07 | Data read error | Key data not accessible. |
| 08 | Initialization | Factory initialization, CRC bad (information in key is corrupt). |
| 09 | CenBank | User key is not authorized to enter lock. |
| 0C | Time window mismatch | Error in the key time data. |
| 0D | User out of time window | The user is attempting to access the lock at a time that does not fall within the defined lock access time on the key. Have the Supervisor display the user key information at the PC system to check the Window Opening Information, thus verifying when the user is able to access the lock. |
| 0F | Audit buffer | Error writing audit data |
| Symbol Only | See the notes column | Incorrect combination entered Incorrect lock serial number and name Audit count mismatch |
| LCO | 5 Failed lock entry attempts | The combination was entered incorrectly 5 times. The lock has now gone into a “lockout” mode. Review the items in the previous section (Lightning Bolt Only) to try and determine the cause for the failed attempts. Wait at least 4.5 minutes without powering the lock and then enter a valid combination and present the appropriate key. Gen2 Locks |