NFS2-640/E Operations Manual —
P/N 52743:F1 06/16/2011
71
System Troubles
Point and System Troubles Lists
PROGRAM CORRUPTED
The database that houses the panel’s programming is
corrupt.
The database must be re-downloaded, or all
programming must be cleared and re-entered. If the
trouble still does not clear, contact Technical Services.
PROGRAM MODE
ACTIVATED
A user is currently accessing the panel’s programming
menus.
No action is required / Exit the Programming mode.
RELEASE DEV. DISABLE
Releasing devices have been disabled.
Enable the devices.
SELF TEST FAILED
Diagnostic test failed.
Call Technical Services.
STYLE 6 POS. LOOP x
There is an open circuit on the positive side of loop x. Style 6 and Style 7 are supervised methods of
communicating with addressable devices. If the control panel detects a trouble (open), it will drive both ends of
the loop, maintaining communication in an unsupervised method. The latching trouble will display on the panel as
a Style 6 trouble until you correct the condition and press
RESET
. Style 7 configuration of the SLC requires the use
of ISO-X isolator modules.
STYLE 6 NEG. LOOP x
There is an open circuit on the negative side of loop x. Style 6 and Style 7 are supervised methods of
communicating with addressable devices. If the control panel detects a trouble (open), it will drive both ends of
the loop, maintaining communication in an unsupervised method. The latching trouble will display on the panel as
a Style 6 trouble until you correct the condition and press
RESET
. Style 7 configuration of the SLC requires the use
of ISO-X isolator modules.
STYLE 6 SHORT LOOP x
Style 6 and Style 7 are supervised methods of communicating with addressable devices. If the control panel
detects a trouble (open or short), it will drive both ends of the loop, maintaining communication in an
unsupervised method. The latching trouble will display on the panel as a Style 6 trouble until you correct the
condition and press
RESET
. Style 7 configuration of the SLC requires the use of ISO-X isolator modules.
SYS INITIALIZATION
The devices are initializing.
No action is required, as the trouble will clear when
initialization is completed. However, devices will not
report off-normal events while this trouble exists.
TERM. SUPERVISORY
There is a communication error with the CRT-2.
Check connections to the CRT-2 terminal.
UDACT NO ANSWER
The UDACT is not responding.
Determine whether the UDACT is functional, and
connected and addressed properly.
UDACT TROUBLE
The UDACT is in trouble.
Determine if the UDACT is functional and wired
correctly.
* This trouble may be fire panel or backup battery related. Test and replace backup batteries if necessary/
SYSTEM TROUBLES
TROUBLE MESSAGE
TYPE
TROUBLE DESCRIPTION
ACTION
Table D.2 System Troubles
