Frequently Asked Questions.. These are some common questions asked by our customers. If you don't find your particular question listed here, please contact our customer care department. Is it my responsibility to test my alarm system, and if so how do I test it? I need to change my user code, can you change it for me? How do I change the people on my emergency call list? My alarm was triggered by mistake, what do I do now? I have a FC or "Failure to Communicate" on my keypad. What does that mean? How do I add an additional code to my alarm system? What is the difference between Stay, Away and Instant? I accidentally triggered my alarm and I have turned it off, but now it will not arm again, what's wrong? What are your normal service hours?