What is comm failure on alarm?
Matthew Barrera
Published Feb 19, 2026
What is comm failure on alarm?
This means that your alarm has tried to communicate with the monitoring station and did not succeed in connecting to it. It could be as simple as the phone line is dead to the alarm, or it tried to during a storm and the phone was not in service when it happened.
How do you reset ADT comm failure?
How to Reset an FC code on ADT Security System
- Step 1: Locate the reset button on your ADT alarm keypad.
- Step 2: Sometimes the reset button does not work.
- Step 3: If you followed steps 1 and 2 correctly, your alarm system will reset, and then turn off.
- Step 4: That’s it!
Why is there a COM fail message on my keypad?
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. This can happen for a variety of reasons.
What to do if your keypad is flashing numbers?
(NAPCO only) Keypad FLASHING LIGHTS : If your keypad is flashing numbers, note which ones. If it is flashing lights, note which ones. If it is flashing 3 lights AND numbers at the same time (Napco/Magnum Alert) hold down the 9 button for 5 seconds.
Why does my keypad keep flashing military time?
8 Loss of system time (after a total power loss at outlet and from battery, the system will lose time and date programming. To program the time press *6 Master Code [HH:MM] [MM:DD:YY] (Use military time for example 3PM is 15:00 ) Your keypad will show in words what is wrong.
Why does my keypad keep beeping and flashing?
KEYPAD BEEPING or FLASHING LIGHTS. If your system is “acting up” read on: Most emergency service calls are due to phone line, battery or power interruptions. In all of these cases, the alarm system will notify you of the problem by beeping and flashing lights.
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. This can happen for a variety of reasons.
Why does my alarm keep saying com fail?
“Com Fail” is one of several trouble messages that you may see on your security system keypad. Although it is concerning to see any trouble message, in most cases the problem is temporary and can easily be handled. Below is a chart that shows some of the most common reasons of alarm system trouble.
How to clear a ” COM fail ” message on your security system?
1 Step One: SHIELD Security Systems clients, please call your local office. 2 Step Two: State that you had a “com fail” and need to clear your alarm panel. Step Three: Give your false alarm password. 3 Step Six: Silence the system by entering your user code. More
Why do I get a COM fail message on shield?
This can happen for a variety of reasons. Most commonly, a loss of phone service due to a power outage. Even a temporary loss of power may result in a “com fail” message. ADT Customers, please call your ADT representative. SHIELD Security can not assist you in clearing this message.