How Do I Change the Installer Code On a Honeywell L5100?
You can change the Installer Code on a Honeywell L5100 by accessing programming for the system. To do this normally, you will need the existing Installer Code for the system. If you do not have the existing Installer Code, then you must perform the backdoor method to get into programming.
Alarm Grid does not recommend changing the Installer Code from its default of 4112. This is to prevent you from becoming locked out of programming. The Installer Code cannot disarm the L5100 unless it was the code used to arm in the first place. With that in mind, it is not a security risk to keep the Installer Code at the 4112 default, provided that you do not use the code for arming and disarming.
The most common reason to change the Installer Code on an L5100 is to set it back to its original value of 4112. By setting the code to 4112, you can always look up the code if you lose it or forget it. Just remember to not use the code for any purpose outside of entering programming. Otherwise, you should always use the system's Master Code or a valid user code for functions like arming and disarming. Do not share these private codes with individuals who should not have access to the system.
Of course, it is also possible to change the code from its default of 4112. We do not recommend doing this, but it is an option as well. Regardless of whether you are changing the IC back to 4112 or setting an entirely new IC, the general process is the same. Complete the following steps to change the L5100 Installer Code:
1. Enter programming. You must enter programming to change the L5100 Installer Code. This will normally require knowing the existing Installer Code. It is also possible to get into programming using the backdoor method if you do not know the existing Installer Code. For more information on performing the backdoor method, please see this FAQ. Make sure to pay careful attention to specific information regarding the backdoor method on the Honeywell L5100.
If you already have the existing Installer Code, then you can complete this process without having to backdoor into programming. In that case, begin from the main panel screen, and choose Security > More > Tools > enter Installer Coder (default 4112) > Program. You will enter panel programming.
2. Change the code. Upon entering programming, you should choose the option for Installer Code. You can press "Clear" in the bottom-left to wipe the current code. Then enter the new four-digit code you want to use. Remember, the user of the code 4112 for this purpose is strongly advised. Once you have entered the code, ideally 4112, press "Done" in the bottom-right corner to finish changing the code.
3. Return to main screen. Now return to the main screen for the system. This is done by repeatedly pressing the return arrow in the upper-right corner until you are taken back to the main screen. Make sure to select "YES" when asked if you want to allow the Installer to re-enter programming. Failing to select "YES" will result in you becoming locked out of programming, and you will need to perform the backdoor method to get back in. This is true even if you have the existing Installer Code.
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