Vista 20p "Fault 03 Line"
#1

I have an active fault that says "Fault 03 Line" and the system wont arm, im pretty sure its not a sensor; maybe the telephone line?
Please help
Vista 20p
6160V
1 motion sensor
hardwired
Please help
Vista 20p
6160V
1 motion sensor
hardwired

#2
Forum Topic Moderator
According to the trouble shooting chart, it may be an issue with a expander of some type. If you don't have wireless, it may be a connection on a keypad (I think some of the better keypads are logged into the system as expanders).
#4
Forum Topic Moderator
It depends on what boards are added into the system. I'd guess at one with an address of 3. A quick test to eliminate the hardwired zone 3 is to simply put a eol resistor on the zone terminals. Otherwise, on any expander boards, I'd check the communication wires that go back to the keypad bus.
#5
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Address 3 is the default address of AlarmNetC (cell backup for the phone line). You might check to see if there are more wires on terminals 6 & 7 than there are keypads, although this is not fool-proof, since AlarmNet can be piggy backed on a keypad wire.