How to Reset ADT Alarm without Code?

Here is a brief walkthrough that discusses how to reset ADT alarm without code in a generic sense. This ideally is a four-step process that begins by identifying the ADT system with a careful scrutiny of the circuit board wherein you can see the WA3001 or WA3000 code on the sticker.

Next, you must set the “Installer Code” and get confirmation for the same by hearing the beep sound which can further be utilised for the generation of the “Master Code”. Now, this “Master Code” generation requires entering the “Installer Code with “+802” and punching in the 4-digit code going forward. Finally, test the alarm system using the “Master Code” by closing the doors and windows and get your ADT alarm operational.

The process to reset the ADT alarm clock differs from brand to brand. Most of the ADT security systems installed are Honeywell Vista 20P model WA3001 or WA3000. Here in this post, we are going to explain how to reset the alarm system without a code.

How to Identify the ADT System?

The identification of the ADT security system can be done by carefully checking the circuit board with a chip. On that chip, you will find a sticker with WA3001 or WA3000 written on it.

Reset ADT Alarm without Code

How to Set the Installer Code?

Below are the simple steps that you need to follow to set up installer security code on your ADT system.

Remove the backup battery inside the panel.
Disconnect the system from the power source.
Please ensure that the system is turned off.
Now, reconnect the system to the power source.
Wait for a minute and then press the * and # keys at the same time.
Now, the keypad will ask for an installer code.
Then, enter a 4 digit code and then type *20.
After that, you will hear a confirmation beep.
Now, exit the programming mode by pressing *99.
After that, set the master code using the installer code.

How to Set Master Code?

How to Reset ADT Alarm without Code

Set the master code by using the alarm keypad on your ADT system. Below are the steps that you need to follow in order to set the master code.

First of all, enter the installer code + 802 and then enter the 4 digit code.
Now, you will hear a confirmation beep.
That's it. Now, the master code has been successfully set on your security system.

Test the Alarm System

In the final step, you just need to test your alarm system. Use the master code to disarm or arm the alarm. You can also create user codes using the master code.Test the master code and user codes. Please ensure that all the windows and doors are closed when you test the alarm system.