However, many users change the other codes on their panel for their own convenience and to prevent intruders who may know the default Master Code from accessing their systems.įor reference the default Master Code on any Honeywell Vista P series system is 1234. You can also change the Installer Code, but we do not recommend doing this, as it could potentially lock you out of programming later. A panel with a numeric keypad, such as a Honeywell Vista or an 元000, will have a different process than a touchscreen system, like a Lynx Touch panel or a Lyric Controller.Īny user code, including the Master Code can be changed on a Honeywell system at any time. To change the codes on a Honeywell alarm system, you will follow a certain process depending upon the system type.