2-2
When the Operator Interface Panel has an abnormal condition, at least one of the
interface panel LEDs (FIRE ALARM, PRIORITY 2 ALARM, SYSTEM
SUPERVISORY, or SYSTEM TROUBLE) begins to flash, and the tone-alert
sounds. The alphanumeric display on the interface panel shows the total number
of abnormal conditions present in the system. At a glance, you know how serious
the situation is by reading the number of abnormal conditions displayed, such as
the TrueAlert appliance in trouble as shown below.
CUSTOM LABEL FOR CHANNEL 1 APPLIANCE 4
AUDIBLE/VISUAL NO ANSWER
Suppose that you want to disable this appliance. Since this is a TrueAlert
appliance, you can’t directly. You must disable the Virtual NAC (or Virtual
NACs) to which it belongs.
The TrueAlert appliance in trouble is located on the TrueAlert Addressable
Controller which is regarded by the 4100/4020 as a ‘slave’ card. The 4100
Programming Unit Programmer Report lists the card address for the TrueAlert
Addressable Controller as Card Address 4 on this system. The Appliance Custom
Label thoughtfully provided the Channel and Appliance Number, so we have the
appliance address: 4-1-4. Just press ADDR on the auxiliary keypad, enter the
address, and press ENTER. The Operator Interface displays the following screen.
CUSTOM LABEL FOR CHANNEL 1 APPLIANCE 4
AUDIBLE/VISUAL NO ANSWER
Go to the DISPLAY/ACTION keypad and press FUNCTION twice. The
following information appears.
AUDIBLE GROUP CONFIG: 10 11 0
VISUAL GROUP CONFIG: 10 0 0
This data tells you that the appliance is a member of two VNACs: VNAC 10 and
VNAC 11. To disable this appliance, we must disable both VNACs.
Notes:
1. A 4100 System Report showing VNAC locations and
membership is very helpful for this procedure.
2. Disabling a VNAC may disable other appliances in
that VNAC.
Continued on next page
Handling Abnormal Conditions
Read the Display
How to Identify a TrueAlert
Appliance
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