NFS-640 Operations Manual P/N 51334:B 10/03/2003 79
Appendix D: Point and System Troubles Lists
There are a variety of point or system trouble types that may appear in a trouble message. The tables
below give lists of the troubles and indications of their cause.
Point (Device) Troubles
A message from the “Trouble Type” column in the following table will appear in the upper right corner
of the panel display when a point (device) trouble occurs. Use this table to help determine what the
trouble is.
Table D.1 Point (Device) Troubles
POINT TROUBLES
TROUBLE TYPE TROUBLE DESCRIPTION ACTION
AC FAILURE The auxiliary power supply has lost AC power. Determine whether there is an AC power loss or
whether the power supply and wiring is correct.
ADRFLT There is more than one device of a single type (detector or
module) with the same SLC address. A detector and a
module can share the same address on an SLC, but two
detectors, or two modules, can not. Note that some
addressable devices (eg certain power supplies, XPIQs
and RFXs) may not appear to be detectors or modules, but
are addressed on the SLC as such.
Readdress the incorrect device.
CHGFLT The power supply’s battery charger is not working properly. Correct the fault.
CM LOST Communication has been lost with an RFX Check the RFX to determine the problem.
DIRTY 1 The detector is dirty and needs cleaning Clean the detector.
DIRTY 2 The detector requires cleaning immediately. It is a false
alarm risk.
Clean the detector immediately.
DISABL The point has been disabled. Service and re-enable the point.
GNDFLT There is a ground fault on the main or auxiliary power
supply.
Correct the fault.
HI BAT The auxiliary power supply’s battery charge is too high. Check the batteries for problems. Replace batteries
if necessary.
INVREP The device has returned a response to the panel that the
panel did not expect.
Check the device for functionality, addressing and
wiring.
LO BAT The auxiliary power supply’s battery charge is low, or the
RFX device’s battery charge is low.
Check the batteries for problems. Replace batteries
if necessary.
LO TEMP The temperature read by a Heat+ or Acclimate™+ detector
is too low.
Raise the heat in the area of the detector.
LO VAL The detector chamber reading is too low; the detector is
not operating properly.
The detector must be removed and replaced by an
authorized service representative.
NO ANS The device (module or detector) is not responding to the
poll. Either the device is not working or it is not connected
properly.
Determine whether the device is functional, and
connected and addressed properly on the SLC.
NO SIG The device (module or detector) is not responding to the
poll. Either the device is not working or it is not connected
properly.
Determine whether the device is functional, and
connected and addressed properly on the SLC.
OPEN The module device has an open circuit on its supervised
wiring.
Check the connections from the module to the input
or output device to which it is wired.
PSFAIL The power supply is not working properly. Check the battery for problems. Replace battery if
necessary.
SHORT The module device has a short circuit on its supervised
wiring.
Check the connections from the module to the input
or output device to which it is wired.
TAMPER An RFX device has been removed from its base. Check the RFX device for tampering.
TEST F This detector has failed the FACP’s periodic detector test
for alarm capabilities.
The detector should be removed and replaced by an
authorized service representative.
VER HI This detector, which has been programmed to participate
in alarm verification, has gone into and come out of
verification its programmed limit without going into alarm.
Either something is wrong with the detector or there is a
condition nearby (such as someone smoking) that causes
it to go into verification frequently.
Check the detector and the conditions nearby to
determine the problem.
XP TBL XPIQ general trouble. Check the XPIQ point for problems
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