There is a simple way to reset the master code or installer code in the older Visonic Powermax security panels 2003-05.
NOTE: this does not reset the User Code, only the Installer (master) Code.
1. Unplug the panel from the A/C outlet.
2. Disconnect the backup battery. On the front, pry open the left-hand side front panel cover with a screwdriver. Use a philips screwdriver to remove the battery cover screw.
3. On the back side of the panel. Use a metal paper clip to short out the two solder joints (or jumper pins if equipped). While holding the paper clip over the pins, shorting out the pins, plug in the panel to A/C outlet to power up. Hold for about 15 seconds then unplug from A/C. Remove the paper clip.
4. Place the backup battery and covers back in the unit and plug in the A/C outlet. Go to the Installer Mode and enter code 9999.






