How do you reset the alarm on a Honeywell alarm?
Andrew Ramirez
Published Feb 24, 2026
How do you reset the alarm on a Honeywell alarm?
How to reset the installer code
- Unplug the transformer from the power source.
- Disconnect the battery.
- Plug the transformer back in.
- Reconnect the battery.
- Within 30 seconds of turning the alarm system on, press * and # at the same time.
- Enter *20.
- Enter a new 4 digit installer code.
- Press *99 to exit programming mode.
Is the Honeywell Vista series an alarm panel?
The Vista series by Honeywell Security has been a mainstay of Honeywell’s hardwired / wireless hybrid alarm panels for many years now. Take a look at the key differences and the variations of kits we offer. If playback doesn’t begin shortly, try restarting your device.
Are there hardwired zones on Honeywell Vista 20p?
Now, you can expand on these system’s hardwired zones by adding a 4219 Zone Expander If you add the 4219 to the Vista 15p, you’ll get a maximum of 22 hardwired zones. On the 20p and 21ip, you will get a maximum of 48.
What’s the difference between Honeywell Vista and 21ip?
The only difference in these systems is that the 21ip has a built in internet communicator that you can use for central station monitoring service. So, that’s pretty nifty if you wanna have monitoring service be internet. That would be the one to go for. These systems, we offer different kits on our website.
What’s the difference between the Honeywell 15P and 20p alarm systems?
Another difference between these systems is the partitioning capability, 15p only has one partition, real simple system, the 20p and 21ip, they offer two partitions. And partitioning is basically, if you have two separate buildings on the same property, and you wanna arm and disarm and control these separately.
Is it easy to program Honeywell vista-20p alarm system?
Also, the VISTA-20P programming guide is written for an experienced alarm installer and not for an end user so, even with the help of the guide, programming a VISTA-20P can be a frustrating experience. That is why, here at Alarm Grid, we help explain the programming steps in a way that is simple and easy to understand.
Can a vista panel arm in Stay Mode?
The Vista-15P, Vista-20P and Vista-21IP series panels offer many convenient features, one of which is the ability to arm in the Stay Mode. When you arm your system in Stay, meaning you’re going to be staying on the premises, the system automatically bypasses any zone programmed as an interior zone type.
Can a vista-20p be installed by someone else?
Most alarm companies change the default installer code of [4112] to something different and they do not provide you with the installer code, so if your VISTA-20P was installed by someone else, you will most likely need to use the “backdoor” programming method.
How to set up night stay zones on a vista-P panel?
On the Tuxedo style keypads, you can choose the way you want the Night button to behave. To do so, go to Setup->System->Advanced Setup: Enter the Installer Code when prompted, then press “Night Setup”. You have 5 options to choose from: Away/Stay/Instant/Night/Maximum. For our purposes, you should choose “Night”at this prompt.