Ensure that the security system is disarmed
Press the 5 key. The security system is now in the passcode change mode.
Enter the old passcode (the passcode to be changed). Press ENTER key.
Enter the new passcode. Press the ENTER key.
Enter the new passcode again. Press the ENTER key.
Test the new passcode by using it to arm and disarm the system. Do not use any of the Command Center arming commands to arm the system until it is certain that the new passcode is working.