Interlogix Concord Express Installation Manual - Manual (Page 86)

Chapter 3
80 Concord Express Installation Instructions
5. Measure the incoming AC voltage at panel terminals 1 and 2. It should read
about 16.5 VAC.
No incoming AC voltage at panel terminals 1 and 2.
1. Unplug the AC power transformer and disconnect the wires from the
transformer and the panel.
2. Check transformer to panel wire for short or open circuits.
3. Plug in the transformer and check for 16.5 VAC at the transformer
unconnected terminals. If zero (0) volts, replace the transformer.
Touchpad display indicates SYSTEM LOW BATTERY.
1. Check that the backup battery is installed correctly and the AC power
transformer is plugged in.
2. Measure the incoming AC voltage at the panel terminals 1 and 2. It should
read about 16.5 VAC.
3. Remove the backup battery power by disconnecting the red (positive) battery
wire. Check for 11.75 to 13.5 VDC battery charging voltage between panel
terminal 3 (GND) and the disconnected red battery wire. If the charging
voltage is not within range, call Technical Services.
4. Check for 11.75 to 13.5 VDC battery voltage between the backup battery
spade lugs. If the battery voltage is not within this range, replace the battery.
Note
: When the panel is running a backup battery test, the reading at the
connected battery can range from 11.2 to 13.5 VDC. The panel automatically
runs a backup battery test under the following conditions: (1) on initial power-
up, (2) during user sensor test, (3) once every minute when backup battery
has failed, (4) once every 24 hours at the programmed STIME (UL 98 Options
off) or once every 4 hours (UL 98 Options on).
With the AC power transformer plugged in, the panel automatically charges
the battery. While the battery is charging for the first time it is normal for the
system to indicate System battery failure. This can take a number of hours
depending on the initial battery charge. Once the battery reaches 12.5 VDC
(full charge as measured while in battery test), the condition clears. If the
trouble condition persists after 24 hours, replace the backup battery.
After you press status, the touchpads flash AC or display AC POWER
FAILURE/AC FAILURE. (Panel continues to operate from backup battery.)
1. Check the AC circuit breaker to be sure the circuit is live.
2. Check for proper panel and transformer wiring.
3. Check that the transformer is plugged into a nonswitched outlet and secured
with the provided screw.