AMERITECH AM100 - 3. COMM. FAILURE (or FC); 4. SYSTEM LO BAT (or BAT with no zone No.); 5. LO BAT + zone descriptor (or BAT with zone No.); 6. MODEM COMM (or CC)

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TROUBLE CONDITIONS (cont’d)
*The beeping that
accompanies a low
battery display
(items 4 and 5)
can be stopped by
entering an OFF
sequence (security
code + OFF).
3. COMM. FAILURE (or FC) Indicates that a failure has occurred in the telephone
communication portion of your system. CALL FOR
SERVICE IMMEDIATELY.
4. SYSTEM LO BAT Indicates that a low system battery condition exists,
(or BAT with no zone No.) accompanied by a once-per-minute "beeping"* at the
Keypad. CALL FOR SERVICE IMMEDIATELY.
** Not all systems
use wireless
transmitters.
5. LO BAT + zone descriptor Indicates that a low battery condition exists in the
(or BAT with zone No.) wireless transmitter** displayed, and accompanied by
a once-per-minute "beeping"* at the Keypad. CALL
FOR SERVICE IMMEDIATELY.
6. MODEM COMM Indicates that the control is on-line with the central
(or CC) station's remote computer. The control will not operate
while on-line. Wait a few minutes. The display should
disappear.
7. POWER indicator (if present) The system is operating on battery power only. If only
is off. AC LOSS is displayed some lights are out on the premises, check (or NO AC)
circuit breakers and fuses and reset or replace as
necessary. CALL FOR SERVICE IMMEDIATELY if
AC power cannot be restored to the system.
8. Busy-Standby (or dI) If this remains displayed for more than 1 minute,
system is disabled. CALL FOR SERVICE AT ONCE.
9. OPEN CIRCUIT (or OC) The keypad is not receiving signals from the control.
10. Long Rng Trbl (or bF) If programmed, backup Long Range Radio
communication has failed. CALL FOR SERVICE AT
ONCE.