Lynx Plus - Failure to Communicate

There are a number of reasons why the Honeywell Lynx Plus L3000 panel may experience broadband communication failure. If your system experiences a communication error, please see below for how to correct this issue.

 

The most common errors related to persistent communication failure can be resolved by a quick power cycle to your device.

To do this, you will want to disconnect the device from both the power outlet and remove the battery for at least 2 minutes. Once you unplug the device from the outlet, prepare to access the battery by following the below instructions:

 

1. First, remove the transformer from the wall. You may need to remove the screw holding it in place.

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2. Insert a flathead screwdriver into the top slots and push the tabs, one at a time, to flip down the front cover.

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3. Remove the screws from the battery holder, then remove the battery.

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4. Unplug the battery from the board shown below.003b.png

 

Remember to allow 2 minutes for the system to fully discharge and reset before reconnecting the battery.

To restore the panel, replace the battery and secure it into place using the screw removed in step 3. Align the cover over the panel, and press it until both tabs lock into place. Plug the transformer into the power outlet, returning the screw removed in step 1.

 

Additional Considerations if Power Cycle Did Not Resolve the Issue:

Common Communication Error Codes:

  • bF: Cellular module cannot communicate with the panel
  • Comm Fail: Failure to communicate
  • d1 Standby: Panel powering up or disabled by downloading
  • Fault 90: RF Jam or Interference
  • Fault 103: Panel not communicating with the cellular module, cellular case tamper, or cellular low battery
  • FC: Fail to communicate

Have you recently experienced a power outage?

The battery which powers your panel during a power outage may need time to recharge fully before there is enough power for the cellular module to communicate. Please allow up to 24 hours for the trouble to pass.

Are there other issues with the power source?

Ensure your panel is powered by an outlet that is not connected to a switch (GFI Switch Outlet) and that it is securely connected to the outlet, and that the outlet is supplying power. You may test the power supply by plugging another device into the outlet.

Are you seeing the message "Modem Comm"?

If the code displayed is Modem Comm, then the system should be functioning as designed while a download or remote access is in progress.

Is there a potential for signal interference?

Large metal objects and appliances that generate radio frequency can interfere with signaling. Wall materials may also pose an issue. It is best if your system is located near an exterior wall, above ground (not in a basement), and not in the middle of a large structure (like an interior closet far from exterior walls.)

Could the issue be a temporary cellular outage in your area?

If there’s an interruption of cell service in your area, your system’s communication could be impacted. This website may help you identify an outage: Downdetector

Is your panel connected by a landline phone service?

Errors could be caused by a phone service outage in your area. Interruptions are common when you first switch service providers. New providers may not have activated the necessary wires leading to the panel.
Note: VoIP and Digital Voice Over Cable are not compatible with your security system.

 

If you rely upon, or recently relied upon, a landline for your system to communicate, text Brinks Home at 469.513.8685 to upgrade your panel with the ability to communicate via cellular services. With cellular communication, you get access to remote arming and disarming from your phone. Also, this enables you to transform your home with smart automation devices like remote cameras, thermostats, lights, and door locks.

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