First Alert FA1220CV - Manual (Page 39)

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TROUBLE CONDITIONS
Typical "Check"
Displays
The word CHECK on the keypad's display, accompanied by a rapid "beeping" at the keypad,
indicates that there is a trouble condition in the system.
To silence the beeping sound for "check" conditions, press any key.
1. "CHECK" accompanied by a display of "CALL SERVICE" indicates that a problem
exists with the system that eliminates some of the protection. CALL FOR SERVICE
IMMEDIATELY.
* Note that zone
numbers 87, 88-91,
97 and 98 represent
problems with system
components, which
are not user
serviceable. CALL
FOR SERVICE
IMMEDIATELY.
2. "CHECK" accompanied by a display of one or more zone descriptors indicates that a
problem exists with those zone(s)*. First, determine if the zone(s) displayed are intact and
make them so if they are not. If the problem has been corrected, the display of the zone
descriptor(s) and CHECK should disappear after entering your security code + OFF. If not,
key another OFF sequence (Code plus OFF) to clear the display. If the display persists,
CALL FOR SERVICE IMMEDIATELY.
3. "COMM. FAILURE" at the Keypad indicates that a failure has occurred in the telephone
communication portion of your system. CALL FOR SERVICE IMMEDIATELY.
4. "SYSTEM LO BAT", accompanied by a once per minute "beeping" at the keypad indicates
that a low system battery condition exists. CALL FOR SERVICE IMMEDIATELY.
** Not all systems
employ wireless
transmitters.
5. "LO BAT" and a zone descriptor, accompanied by a once per minute "beeping" at the
keypad indicates that a low battery condition exists in the wireless transmitter** displayed.
CALL FOR SERVICE IMMEDIATELY.
6. "MODEM COMM" indicates that the control is on-line with the central station's remote
computer. The control will not operate while on-line. No action is necessary.
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