What does yellow LED flashing 9 times mean on DSC TL280E?
- AAnita SimonSep 14, 2025
If the yellow LED on your DSC Security System is flashing 9 times, it indicates an FTC trouble. Restart the system, if trouble persists, contact the dealer.

What does yellow LED flashing 9 times mean on DSC TL280E?
If the yellow LED on your DSC Security System is flashing 9 times, it indicates an FTC trouble. Restart the system, if trouble persists, contact the dealer.
Why is the yellow LED flashing 7 times on my DSC Security System?
If the yellow LED on your DSC Security System is flashing 7 times, it means the receiver is not available. First, ensure that the Ethernet path has Internet connectivity. If you're using a static IP address, confirm that the gateway and subnet mask are entered correctly. If the network has a firewall, ensure that the programmed outgoing ports are open (default UDP port 3060 and port 3065). Ensure that all the receivers are programmed for DHCP or have the proper IP address and port number. Ensure the cellular receiver APNs have been programmed with the access point name provided by the cellular provider. If Common Mode is used, and only one path is initialized while the other path is not successful, generate a manual test transmission over both paths or power cycle the communicator to recov...
| Brand | DSC |
|---|---|
| Model | TL280E |
| Category | Security System |
| Language | English |
Installer must instruct the system user on safe product operation, servicing, and usage of authorized accessories.
Details specifications and compatibility for various DSC communicator models and supported cellular bands.
Highlights security features, panel mounting, and technical specifications for the communicators.
Guides on installing Ethernet, SIM card, and RS-232 cables for communicator setup.
Details the process of installing the communicator module within compatible control panels.
Procedure for testing cellular signal strength and antenna placement for optimal radio operation.
Steps for initial programming of the panel and communicator, including keypad data entry.
Enables remote system control and notifications via SMS text messages.
Explains the function of the yellow LED and its flash codes indicating system troubles.
Details red network status LEDs and green signal strength LEDs for communicator monitoring.
Lists and describes troubles indicated by yellow LED flashes, including SIM lock, cellular, and Ethernet issues.
Explains the red network status LED and green signal strength LEDs for operational status.
Provides a table of trouble indications, possible causes, and recommended solutions for common issues.
Configures network settings like IP addresses, subnet masks, gateway, DNS servers, and receiver supervision.
Manages supervision for Ethernet/cellular receivers, primary path selection, redundant communications, and firmware upgrades.
Controls receiver enablement, network trouble suppression, and low signal trouble masking.
Configures test transmissions with primary/secondary receiver backup and FTC trouble generation.
Configures account code, DNIS, and IP address for Ethernet receiver 1.
Configures account code, DNIS, and IP address for Ethernet receiver 2.
Configures account code, DNIS, IP address, port, and APN for cellular receiver 1.
Configures account code, DNIS, IP address, port, and APN for cellular receiver 2.
Enables SMS notification, command control, character format, message handling, and retry settings.
Manages SMS phone numbers and configures event types for sending SMS notifications.
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