Electronic Alarms and Home Security Devices - No Master Code - Ademco Vista 4140XMP

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azinvestor
10-09-06, 10:10 PM
I have the Ademco Vista 4140 XMP home security system. When I purchased my home, the previous owner did not remember the master (or any) code. How do I reset it? I have searched online, but no manuals explain. Thank you!!!

MrRonFL
10-10-06, 10:54 AM
Ademco 4140xmp: Retrieving Installer code
Nearly all Ademco family (this includes First Alert, Security Link, and several ADT models) panels can retrieve the Installer code by disconnecting the battery, then the AC power. Wait a minute, then reconnect power in the opposite order. Within 50 seconds, on any keypad press * + # at the same time. Unless the system has had an installer lockout feature activated, the panel should go into program mode. Key in #00, and the panel will read back the installer code one digit at a time. Key in #01 and the panel will read back the master code. You can change either code by entering *00 or *01 respectively followed by the desired new code. Exit program mode using *99.
azinvestor
10-10-06, 11:31 AM
Thank you. However, maybe I did something wrong. When pressing the * and # at the same time, it set off the alarm - panic mode!

azinvestor
10-10-06, 11:56 AM
Took a couple times, my mistake. It is now done though!!
Thank you!
Shivan
01-13-08, 08:41 AM
I have a Vista 4140xmp
I know my Master Code, but how can i change it?
Thank You
MrRonFL
01-13-08, 03:54 PM
Follow the same instructions in the paragraph above.