First Alert FA168C - Manual (Page 38)

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Words or letters in parentheses ( ) are those that are
displayed on Alpha Display keypads.
Other Trouble
Displays
* Any “beeping” that
accompanies a trouble
display can be stopped
by depressing any key
on the keypad or by
entering an OFF
sequence (code + OFF)
** Not all systems use
wireless sensors.
COMM. FAILURE Indicates that a failure has occurred in
(or FC) the telephone communication portion of
your system.
CALL FOR SERVICE.
SYSTEM LO BAT Indicates that a low system battery
(or BAT with no condition exists. Display is
zone No.) accompanied by "beeping"* at the
keypad. If this condition persists for
more than one day (with AC present),
CALL FOR SERVICE.
LO BAT Indicates that there is a low battery
+ zone descriptor condition in the wireless transmitter**
(or BAT with number displayed (00 is RF keypad).
zone No.) Accompanied by a single "beep"* (once
every 40 seconds) at the keypad.
Either replace the battery yourself, or
CALL FOR SERVICE. If the battery is
not replaced within 30 days, a CHECK
display may occur.
Rcvr Jam Wireless part of the system is experiencing
(or CHECK 90) RF interference which may impede
reception from wireless sensors.**
MODEM COMM
(or CC)
Indicates that the control is on-line with
the Central Monitoring Station's remote
computer.
The control will not operate while on-line.
Wait a few minutes — the display should
disappear.
BELL FAILURE Indicates that the wiring connection to
(or CHECK 70) the external sounder is at fault (open or
shorted). Accompanied by “beeping” at
the keypad. CALL FOR SERVICE.