Your keypad is informing you that the alarm system is not ready to turn on (arm).
Common reasons for this are that a door or window is not completely closed,
a motion detector may be sensing movement,
or a previous alarm has not been cleared out of the memory.
Once you correct the condition,
the alarm system will be ready to arm.
If you still have doubt on this you can consult with the customer service team.
I have consulted the guys of http://www.videorelay.com/
when I caught myself in a similar situation.