This is common if you recently purchased a new home with an existing Honeywell VISTA security system which is not currently enabled, as well. To disable the check 103 error, in this case, the video shows how to activate programming mode by entering your installer code.. Learn how to troubleshoot an issue with your Honeywell security keypad. Check out this troubleshooting guide for Honeywell alarm system owners.. Long Rng Trbl/bF - Long-range radio communication failure; Here's a video tutorial on identifying trouble codes on Honeywell Lynx Touch L5210:
Check if your Internet router is up and running; If the router is frozen, just reboot it (unplug and plug to power); Use a computer/laptop or mobile device to navigate the Internet.. How to fix the ADT code bf/6f? To fix the ADT bf/6f code, you first must rule out the main cause. Then only you'll be able to fix them accordingly. Here are the steps to fix the ADT bf/6f code: 1. Check internet connection. A proper internet connection is really essential for your ADT system to work well.