How to Reset an FC code on ADT Security System – ADT Home …

How to Reset an FC code on ADT Security System. If your ADT security system is showing ‘FC’ then it is not communicating as it should. ‘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.

: https://adthomesecurityfacts.wordpress.com/2013/10/21/how-to-reset-an-fc-code-on-adt-security-system/