What does FC mean on my ADT alarm?
David Ramirez
Published Feb 16, 2026
What does FC mean on my ADT alarm?
FC is an error code indicating that your security system is having trouble communicating with our monitoring center through the phone line. Check to ensure that your security system is connected to the phone line. You will need to locate the phone line connection, in or around your security system panel.
What does FC mean on Honeywell alarm?
Failed to Communicate
An FC code stands for “Failed to Communicate”. It basically means that the panel attempted to dial out, but its outbound dialing signal was not successfully received.
What is ADT Code bF?
The error code bF shows up in the Honeywell 6150 keypad used by ADT. BF stands for “Backup Failure” and it’s related to the keypad communication. It’s associated with the Long-Range Radio backup system, and it usually means the radio can no longer communicate with the ADT monitoring centers due to a network error.
What does FC mean on my ADT alarm system?
How do I clear the FC code on my Honeywell alarm?
This will clear the phone number that was programmed. It will also adjust the dynamic signaling settings for the panel to prevent future FC messages. An FC code stands for “Failed to Communicate”. It basically means that the panel attempted to dial out, but its outbound dialing signal was not successfully received.
What does a FC code mean on a cell phone?
An FC code stands for “Failed to Communicate”. It basically means that the panel attempted to dial out, but its outbound dialing signal was not successfully received.
What does Comm fail mean on a Honeywell alarm?
On an alphanumeric keypad. like the Honeywell 6160, you will instead see the message “Comm Fail”. For all intents and purposes, these messages can be treated as the same issue. Update: As of March 2020, we understand that some users are still using phone lines for alarm system communication.
FC is an error code indicating that your security system is having trouble communicating with our monitoring center through the phone line. Check to ensure that your security system is connected to the phone line. You will need to locate the phone line connection, in or around your security system panel.
This will clear the phone number that was programmed. It will also adjust the dynamic signaling settings for the panel to prevent future FC messages. An FC code stands for “Failed to Communicate”. It basically means that the panel attempted to dial out, but its outbound dialing signal was not successfully received.
An FC code stands for “Failed to Communicate”. It basically means that the panel attempted to dial out, but its outbound dialing signal was not successfully received.
On an alphanumeric keypad. like the Honeywell 6160, you will instead see the message “Comm Fail”. For all intents and purposes, these messages can be treated as the same issue. Update: As of March 2020, we understand that some users are still using phone lines for alarm system communication.