Mon - Fri: 8:00 am - 5:00 pm  |   990 Criss Circle, Elk Grove Village, IL 60007

How to Reset a Burglar Alarm System Without a Code?

How to Reset a Burglar Alarm System Without a Code?

Home alarms give you a sense of calm which is priceless but sometimes something occurs that causes it to malfunction. When this happens a reset is necessary to stop that beeping sound. Many factors can cause the alarm to need a reset from a brownout to a battery failure. Here are some tips to show you how to reset your burglar alarm.

Why Is It Important to Know How to Reset Your Security System?

There are many reasons for needing to reset the code on your alarm such as houses left behind by inheritance, a forgotten code, a new home, and the previous owner forgetting the code for the alarm system. It is always recommended to reach out to the security professionals who have installed the device to come and reset it. However, we live in the DIY age and many people prefer to tackle these kinds of tasks by themselves.

When to Reset Your Burglar Alarm?

When to Reset Your Burglar Alarm?

There are few things more annoying than an alarm that is incessantly making unpleasant noises or is rendered useless because it isn’t up to date, or the code isn’t functioning. It is important to know when there is a need to reset the code, especially in cases where you need to know how to stop a burglar alarm from beeping.


  • Power outages such as a power cut, blackouts, or brownouts.
  • Wrong code or code forgotten.
  • New home.
  • A battery failure.
  • Settings need to be reset such as date and/or time.

It is so important to know how to reset your burglar alarm to avoid any issues and fully enjoy the protection it can offer.

How Do I Reset My House Alarm After a Power Cut?

Home alarm systems offer protection against intruders and every home should have one. Even though alarms come equipped with a backup battery and are efficient at keeping the bad guys out they can still be vulnerable to a power shortage, power cut, brownout, or blackout. Once there is a power outage an alarm will often malfunction and cause constant beeping or display an error message. And until the home alarm is reset it is useless. Let’s look at the steps to follow to reset an alarm after a power cut:

  • Look for the ‘system’ button on your alarm keypad and double-click on it quickly to silence the alarm.
  • It is important to wait until power comes back on prior to resetting your alarm.
  • Take out the backup battery.
  • Locate your circuit breaker and turn the switch off that sends power to your alarm system. After a few minutes, you can switch it back on.
  • Replace the backup battery.
  • Enter your code then turn the alarm off and re-enter your code a second time to reset the alarm system.

How to Reset the Burglar Alarm with a Lost Code?

How to Reset the Burglar Alarm with a Lost Code?

To err is human and with all the passwords and codes that we need to remember it can get overwhelming at times. This may result in you forgetting the code for your alarm system which can be unfortunate. When this happens, it is recommended to call your security provider and request a new code as soon as possible. Turning off your security device without a code can be a challenge and it can also damage the device. If, however, you feel that it is something you must do, let’s look at how to turn off your burglar alarm without the code:

  • You must look for the main access panel of your burglar alarm system.
  • Shut off the current that sends power to the alarm.
  • Unplug the device.
  • Use a console access key to open the system’s backing.
  • Disconnect the wire that leads to the backup battery

As mentioned above, it is better to contact the company and request a new code and turn the alarm off with a code rather than risking irreparable damage to the home security system.

How to Reset a Burglar Alarm after Tamper?

In all instances, if your home alarm is being tampered with a notification will be sent to you. A common tamper that can occur is if someone tries to remove the cover of the control panel of your home alarm system. Another common way to tamper with your alarm is if someone tries to dislodge the control panel which is called a base/back tamper. In these instances, it is always recommended to contact your security provider and have a professional examine your house alarm. However, regardless of the risk some people still prefer to try and fix the issue by themselves and reset their alarm. Please note, in that case, it is wise to have the alarm system’s manual on hand before attempting a reset.

  • Find the zone affected by the tamper (many alarms will alert you).
  • If the tamper switch is out of place, it is imperative to put it back in position.
  • Replace the cover
  • Put the control panel back in its original position.
  • Enter the code twice

If the tamper alert is still displayed on the screen, then a professional technician must look at it.

Brand Guidelines for Burglar Alarm Reset

DSC Alarms

DCA Alarm System Reset

DSC alarms can start beeping for several reasons, a yellow warning triangle will flash. To find out which type of error you are experiencing press *2, depending on what kind of DSC system you have it will either flash a code or what is wrong with the system. Here are the codes:

1. Service Required (press [1] for more information)

  1. Low Battery (main battery in the panel)
  2. Bell Circuit
  3. System Trouble
  4. System Tamper
  5. Module Supervision
  6. RF Jam Detected
  7. PC5204 Low Battery
  8. PC5204 AC Failure

2. AC Failure

  1. Telephone Line Trouble
  2. Failure to Communicate
  3. Zone Fault (press [5] for more information)
  4. Zone Tamper (press [6] for more information)
  5. Device Low Battery (press [7] for more information)
  6. Loss of System Time

Steps on how to reset your house alarm

  • Enter *72
  • Open the access door and enter your master code twice.
  • Hold down the reset button for 2 seconds

A common error message that will be displayed on the screen for the system is bF (backup failure). It encompasses a wide range of issues, but it is easily fixed. Here are steps to take to troubleshoot it: Enter the command [Master Code] + [1] + [Master Code] + [1].


Qolsys Alarm System Reset

Qolsys is a user-friendly alarm system. It will detect an error and often the screen will go dark or freeze. In the case of such a malfunction it is important to reboot the system and here’s how we do that:

  • Access advanced settings by going to the start screen on your panel and pressing the small grey bar at the top.
  • Choose settings
  • Choose advanced settings
  • Enter the master code
  • Choose panel reboot
  • Press OK to confirm


Burglar alarms don’t just protect the homes, the business, personal belongings, they protect memories. For smart security solutions, please contact us at Forbel. There is no time to wait, protect your memories with a professional security technician today.

Dzmitry Beliayeu
Dzmitry Beliayeu

Dzmitry Beliayeu is a commercial building security expert, technology consultant, and licensed alarm contractor

Related posts
request a quote
Attach a file
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.