Honeywell VISTA-21iP Frequently Asked Questions

Why Did My Panel Report Code E339 "Power on Reset"?
A Honeywell Panel will report the message E339 "Power on Reset" when its communicator has been reset. The communicator for a Honeywell System will reset whenever programming changes are sent to the module or when the module is powered off and then back on. Learn more about the E339 message.
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Which Systems Can Alarm Grid Take Over?
Alarm Grid will support any alarm system that we can take over. To take over a system, the user may need to know the panel's Installer Code and/or Master Code. In some situations, the user will need to replace the system's communicator. Learn more about what systems we can take over.
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How do I troubleshoot a Vista-GSM4G on a Vista-21iP?
With pass-through programming, a user with an Alpha keypad can perform diagnostic testing on the Vista-GSM4G to help determine the cause of communicator issues. Using this feature, signal strength can be verified in addition to other diagnostic testing. Keep reading to learn about this feature.
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How Do I Replace the Battery in My Honeywell Security System?
Replacing the battery for a Honeywell Security System is actually a very simple process. However, some minor tools will be required. The steps will also vary depending on the type of Honeywell System that is being used. Learn how to replace the battery for a Honeywell Security System.
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Are Wired or Wireless Security Systems Better?
In terms of functionality, wired systems can do virtually everything wireless systems can. However, wireless systems are easier to set up, and they require fewer add-ons. this makes wireless systems better for new users. Learn more about the differences between wired and wireless security systems.
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What is a Telco Fault?
When a Honeywell Panel is experiencing problems with its telephone communication, a telco fault message might be displayed. The message can be displayed on any Honeywell Panel that uses POTS communication. Fortunately, there are ways to clear this error. Learn more about telco fault errors.
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Honeywell Lynx Touch L7000 VS Honeywell Vista 21iP
The L7000 and the Vista 21iP are both alarm systems from Honeywell. The L7000 is a wireless all-in-one system, while the Vista 21iP is a more traditional hardwired system. This makes the two systems very different in how they operate. Learn more about these two Honeywell Control Panels.
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Honeywell LYNX Touch & LYNX Plus vs. VISTA systems
Check out our breakdown of the differences between the LYNX Touch and Plus wireless alarm panels vs. VISTA wired security systems
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Can I Change the Time on My VISTA-P System w/o Using the Master Code?
You can use your Master Code or the Installer Code to change the date and time on a Honeywell VISTA P-Series System. By using one of these codes plus the [#63] command, you can change the date and time on your Honeywell VISTA. Learn more about adjusting your VISTA panel's date and time.
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What Is the Best DIY Business or Home Security System?
There are many great DIY security panel for businesses and homes. The best one depends upon the needs of the user. Many users find the Qolsys IQ Panel 2 to be a great DIY system. However, a VISTA Panel might work better if multiple partitions are needed. Learn more about choosing a security panel.
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