To clear this message, it is necessary to remove the phone number that was programmed with the system. You can then adjust the dynamic signaling settings for the panel so that it attempts to send signals using its AlarmNet communicator. This will eliminate the FC message once and for all.Feb 16, 2018
How do I make my ADT alarm stop beeping without a code?
Most systems will begin beeping or chirping as a result of a total power outage or failure to recharge the system backup battery. For many of our most popular systems, beeping alarms and low battery trouble beeps can be silenced by pressing the [OFF] or [#] buttons from the keypad.
What is the default code for ADT alarm?
Use the alarm keypad to set the master code on your ADT system. Follow these steps. Enter the installer code + 802 followed by the 4-digit code.