What's Check 103 Long Range Radio mean on a VISTA-20P?

If you're getting a new bF error today, it's likely because you have an old 2G communicator and will need to replace it.

AT&T has finally sunset their 2G network. It no longer works as of January 1st. While Alarm Grid offers free phone support for any customer that is monitored by us, for everyone else, there is the FAQs on the site.

If you'd like to understand your monitoring options, please call 888-818-7728, or you can sign up for a plan today!

  • If you have a VISTA 10P, 15P, or 20P, then you will need a GSMV4G-TC2 or a GSMX4G-TC2 to get your system back online.
  • If you have a LYNX Touch system, but do not know which system you have, we have put together an identification guide for you.
  • Honeywell L5000: How to Tell if Your LYNX is an L5000

  • If you have an old L5000, then you will need to replace it if you would like to continue cellular service. There is no 3G communicator for it. The current LYNX Touch is the L5210 or the bigger screened L7000. Consider also Honeywell Lyric security which will work with all your old sensors. The Lyric-3G is the communicator for that unit, and it supports WIFI as well.
  • The L5100's communicator can be replaced with a GSMVLP5-4G or the newer 3GL. The 3GL does work in those older units, but the GSMVLP5-4G was built specifically for the L5100 and we would recommend it over the 3GL.
  • The L5200, L5210, and L7000 were never released with 2G communicators. Hurrah!

Honeywell alarm systems like the VISTA-20P issue a 'Check 103 Long Range Radio' error on the keypad when there is an issue with an AlarmNet communicator. Depending on the communication setup on your panel the error can signify one or more of several different things. The keypad trouble is designed to inform the end user that there is an issue with the communicator, such as loss of network connection, cover tamper, or wiring issue between the panel and the communicator. Because the message can have multiple causes, it can be tricky to troubleshoot. If you are not being monitored, or simply want to silence the panel temporarily until a tech can work on the issue, you can disable the long range radio via panel programming. In a Vista-20P panel, you do this via programming location *29. By disabling the radio you are telling the system to no longer communicate via IP and/or GSM! If you are being monitored, and turning this feature off is not an option, there are a few ways to figure out what your issue is, and varying methods to solve it.

The first place to check is the tamper cover, if you are using an external communicator like a 7847i, IGSMV4G, or GSMV4G. These lids can be very tricky to fully close. If the tamper switch is not fully depressed the system displays the same Check 103 error that is designated for communication failures. Sometimes the tamper cover may be in place but not making the proper contact with the tamper switch. A good method of troubleshooting is physically holding down the button and issuing two disarms at the keypad (this may require a partner). If this clears the error than you need to find a way to keep that tamper switch depressed, even if it means building something out, such as a piece of plastic or cardboard, on the inside of the tamper cover.

If you are using an 'IP only' setup the issue may be confined to the internet. These types of issues should be met with a reboot of your router and your alarm system. If the check 103 error reappears after a reboot it may mean there is still an issue with your network. This can be an internet outage, IP conflict, bad wired connection, etc. The first thing to do is verify that your communicator is getting an IP address by logging into your router settings, and searching for the device. If you are using a static (or fixed) IP address, please be sure to verify that it is not within your DHCP range to avoid potential IP conflicts. If you are still unable to solve the issue please seek professional assistance.

If you are using a 'GSM only' only configuration you can use the GSM signal LEDs to gauge signal strength. You need at least two yellow and one green LED in order for the panel to communicate via cellular network. If the signal is not meeting these needs you will need to relocate the unit, or setup an antenna or cellular amplifier, to increase cellular gain. If you are only seeing a single red LED on the GSM signal LEDs a panel and communicator (if external) reboot may do the trick. If not, and if you're sure the communicator is active with the cellular carrier, power down, remove the SIM card, re-seat it, then power back up and check signal strength again.

If the system is set up for dual path communication with IP and GSM then either path failing will cause a comm fail. Follow the steps above to troubleshoot each and use the status LEDs to decipher which path is the root of the problem.

If you have an Alpha display keypad, such as a 6160 the AlarmNet Communicator will display a 4 digit code, in addition to the "Check 103 Long Range Radio" that will help you decipher what the issue is. See below for a chart of these LRR ECP Status Codes, and what they mean.

Status Code



Control Panel lost communication with AlarmNet Device


AlarmNet Device Cover Tamper Detected (Cover Removed)


Communicator has lost contact with the AlarmNet Cellular Network


Communicator has lost contact with AlarmNet


Communicator is not registered; account not activated


Communicator Shut Down


Communicator Power-on Reset AND the panel lost communicator with AlarmNet Device


Communicator Power-on Reset AND Tamper Detected


Communicator Power-on Reset AND Tamper Detected AND Device Not Registered


Communicator Tamper Detected AND Communicator Low Battery


Primary Power Loss (will only be displayed in conjunction with another event)


Battery Charger Fail (will only be displayed in conjunction with another event)


Low Battery (will only be displayedi n conjunction with another event)

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Hi Pete, A check 103 can mean multiple different things within the panel. To avoid going over your panel info in detail here, I'm going to be sending you a personal ticket shortly.
I have been getting this error message recently after changing my battery. When I power everything down (ac adapter and battery) then back on, the Honeywell GSMX4G maintains signal for about 2 minutes before I notice the signal light go dark. Would I be on the right track thinking the replacement battery is the culprit? It's the only thing I can think of that has been different as the system hasn't had a check 103 message for quite a while. It's currently mounted on top of my 20P panel in the basement.
The 0880 is actually an indication of a tamper alarm on the communicator. That is a different error than loss of service.
As an AlarmNet dealer we can simply adjust the IP fault time to zero. That will disable the panel's ability to supervise the IP connectivity. Again as Julia mentioned earlier this is not recommended for obvious reasons. However if you have cellular backup and do not want to be notified (or annoyed) each time your system loses internet you can have your alarm company adjust this IP fault time to zero. It will not even require anet tech support but I am sure they could accomplish the same goal on their end as well.
I work for a security company. You can call Alarmnet Tech Support as a dealer and have them disable the 0880 error code. I do it all the time with cells where the switch goes bad. This also may be possible with a handheld programmer as well but I've yet to have the need to put one in my tool kit with a csr number handy.
Happy to help. What are you using for the alerts on the network outages?
Thanks Sterling. That will work perfectly. I get a text anytime the network is lost and every 60 minutes after until it is restored. I'm just trying to save the dogs sanity if we're not home :) Thanks again!
If you set option 1 of *26 to 0 (or to 1 or 5), you will suppress the communicator trouble sounding on your keypads. Keep in mind, you won't know that your system won't be able to communicate with this disabled so you'll want to ask your monitoring company what level of supervision you have enabled on your account so you have an idea of how long you can be offline before you know about it.
Thanks so much Julia! Its a 10.23 panel.
Bryan, You can set the supervision for that particular feature up to 99 minutes (it is 60 minutes by default) or you can disable supervision completely, but if you disable supervision, your internet connection to the IP communicator could go down without you knowing. Depending on the version of the panel, you may be able to suppress the beeps via *26, but this requires a version 9.12 or higher panel.
Is there a way to keep this function enabled (29) yet keep it from throwing an alert every time the internet goes out? The beeping drives the dogs crazy when we're not home. Thanks in advance.

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