how do i reboot a vista 20 home security?

Power system down and then back up.
Connect your ac 1st and then battery.
Then at the keypad press the * and # at the same time.
If you want to default the panel back to factory settings(YOU LOOSE ALL PROGRAMMING) HIT *97 AND WAIT A MOMENT THEN HIT *99.
Then your done,,,your default keypad code is now 1234.

Garry
January 2009

If you are asking about setting the panel back to its factory defaults, neither way will do that

acorn
January 2009