Locked In! GE SImon XT Doors & Windows - not taking code(s). Code(s) work to set date/time, but when trying to disarm "doors & windows - no entry" condition, no code works. No characters display.

SOURCE: Disarming / Access Code/ Resetting

Ask seller or previous owner the code, or read in the manual how to reset the system to factory defaults
On the previous version (Simon3) it was press cancel + clock set + Minutes+ at the same time and the power up from battery

SOURCE: GE Simon XT panel lights window, door and motion indicators

The system is working as designed. If you arm both doors/windows and motions, but you DON'T exit the premises during the exit delay, the system will "downgrade" its arming to doors/windows only. The assumption is that you haven't actually left the premises and are at risk of creating fale alarms. This behavior can be disabled in System Configuration (though it may require the dealer access code to do it).

Try opening and closing a sensored external door (even if you don't go outside) during the delay after arming doors+motion and see if the motions don't stay active.

SOURCE: GE Simon XT how do I reset the code

You neet to reset the system to factory defaults. Contact me and I can go through it for you.

AlarmProfessor.net

SOURCE: My new GE Simon is programmed and ready to go but

Contact the Professor

AlarmProfessor.net

SOURCE: I just bought a simon XT and the installer set up

Google the Simon XTi. YOu will find the manual online. I don't have this system, but am looking to install it. I did find the info for the manual online in printable form. Sorry, I don't remember the site.