Concord 4 User Manual  23 
Access code integrity 
To preserve the integrity of your system, keep access codes confidential and 
delete extra codes as soon as they are no longer needed. Avoid using obvious 
code patterns such as 1234, 1111, 2222, etc. 
When you  use the system master code to enter user programming, you can: 
•  Change the system master code. 
•  Change or delete the partition master code in the current  partition. 
•  Change or delete regular user codes in the current partition. 
The default  system master code is 1 2 3 4. It is important that you change this 
default  and record the new code (see “User codes” on page 72). 
When you  use the partition master code to enter user programming, you can: 
•  Change the partition master code in the current partition. 
•  Change or delete regular user codes in the current partition. 
There are no default  partition master codes. Record all codes (see “User codes” 
on page 72). 
You cannot enter user programming with a regular user code. 
Touchpad tamper 
The installer can program your system to activate a police alarm in the case of 
possible touchpad tampering. If more than 40 keys are pressed when the system 
asks for a code, and those keystrokes are not part of a valid access code, a siren 
will sound. Talk to your installer  or see “Alphanumeric and fixed display 
touchpads” on page 73 to see if this feature is enabled. 
Changing or deleting user codes 
You can use a touchtone  phone to change or delete user codes, but 
alphanumeric  or fixed display touchpads work much better because of their 
extensive  feedback capabilities. 
Note: The system will not accept the same code for two different users. To 
change system and partition master codes, see “Programming”  on page 55. 
To change or assign a user code: 
1.  Enter the programming menus  by pressing 9, system or partition master 
code. 
2.  For Concord 4 systems, press 030 nnn 0, where nnn is the user number (000 
to 229). For Concord Express V4 systems, press 030 nn 0, where nn is the 
user number (00 to 15). 
3.  Enter the desired four-digit code, and then press #.