Question: What Does Comm Failure Mean On ADT Alarm?

‘FC’ stands for ‘Failed Communication,’ and is a common issue with ADT security systems.

Luckily, minor issues like this do not require that you contact ADT to resolve.

Step 1: Locate the reset button on your ADT alarm keypad.

Press down the reset button and hold it down for about two seconds.

What is comm failure on alarm?

A “Com Fail” message on your security system keypad means that a your control panel attempted to transmit a message to the central station and failed. So, in the morning, as you are leaving for work, you may see a “com fail” message on your keypad.

What does fault mean on ADT alarm?

Let’s get straight to it! A yellow triangle on your DSC ADT Alarm system is also known as a “trouble light.” That means if you see this symbol, your system has an issue that you need to resolve. A trouble light could mean 1 of 8 problems. To find out what the problem is, you can simply press *2 on your keypad.

How do I reset my ADT alarm system?

The security system may need to be reset by entering your code into your system and hitting off twice. Remember to remove the system from Test Mode. Go to and click on My Alarm from the System Management option, select Stop Test to remove the system from test mode and restore operations.

Why does my ADT alarm keep beeping?

The number one reason why your ADT alarm system may be beeping is because the batteries in the keypad are running low or are dead. When this occurs, your system, just like a smoke detector, will randomly beep to let you know that the battery is dead and needs to be replaced.