While the the possible causes of a lit trouble light are endless, the most probable cause and solutions are outlined here: PROBLEM For more complicated issues, however, you’ll need to schedule a service call for a professional service technician to assess and fix the problem. Although it is concerning to see any trouble message, in most cases the problem is temporary and can easily be handled.īelow is a chart that shows some of the most common reasons of alarm system trouble.In some cases, you’ll be able to fix the problem yourself. “Com Fail” is one of several trouble messages that you may see on your security system keypad.

Step Six: Silence the system by entering your user code.ĭone! – Your system keypad should be cleared.Step Five: Open a door or window… Let the siren blare for at least 20 seconds.(Your system will be put in “test mode” temporarily.) Step Three: Give your false alarm password.

Step Two: State that you had a “com fail” and need to clear your alarm panel.

Step One: SHIELD Security Systems clients, please call your local office.

It involves simply sending a signal through to the central station… Reset the cellular transmitter. Before you leave, take a moment to clear the message by following these steps: How To Clear The “Com Fail” Message:Ĭlearing the “com fail” message is easy. So, in the morning, as you are leaving for work, you may see a “com fail” message on your keypad. Note: A “com fail” message does NOT necessarily indicate that your security system is not working now… It only means that there was a temporary loss of communication. Often, this happens in the middle of the night when your system is attempting to send a test message to the central station.

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