16  Advisor Advanced ATSx500A User Guide 
Problems that can occur 
There is a faulty zone 
A faulty zone continues to cause an alarm until it is isolated from the system. 
Your manager is allowed to isolate the faulty zone if necessary. 
As soon as the faulty zone is isolated or the problem has been resolved, the 
alarm is reset automatically. 
Your PIN does not work when you try to acknowledge an alarm 
There are two possible reasons why your PIN may not work when you attempt to 
acknowledge an alarm: 
•  You can only acknowledge an alarm for an area if your PIN is assigned to it. If 
it is not and you try to acknowledge an alarm, you might set/unset the area 
instead. 
•  You cannot acknowledge a system alarm unless your PIN is authorised to do 
so. 
The keypad does not respond to key presses 
The keypad may not respond to key presses even when there is no fault in the 
system. The keypad is locked after a wrong PIN is entered three or more times.  
When you press a key on a locked keypad, it beeps seven times. 
After 2 minutes the keypad becomes available again.